AMS Sectional Meeting Full Program
Current as of Friday, May 7, 2021 03:30:05
Spring Western Sectional Meeting (formerly at San Francisco State University)
 now meeting virtually, PDT (hosted by the American Mathematical Society), San Francisco, CA
 May 12, 2021 (Saturday  Sunday)
 Meeting #1167
Associate Secretary for the AMS Scientific Program:
Michel L Lapidus, AMS lapidus@math.ucr.edu
AMS 2021 Spring Sectional Meetings will be held VIRTUALLY on the originally planned dates. Further details will be posted as soon as they are available. Send questions to meet@ams.org.
Saturday May 1, 2021

Saturday May 1, 2021, 8:00 a.m.12:00 p.m.
Special Session on Advances in Functional Analysis and Operator Theory, I
Special Session 9, American Mathematical Society
Organizers:
Michel L. Lapidus, University of California, Riverside
Marat V. Markin, California State University, Fresno mmarkin@csufresno.edu
Igor Nikolaev, St. John's University

8:00 a.m.
NonArchimedean Radial Calculus.
Anatoly N. Kochubei*, Institute of Mathematics, National Academy of Sciences of Ukraine
(11674739) 
8:30 a.m.
Multidimensional nonlinear pseudodifferential evolution equation with padic spatial variables.
Alexandra Antoniouk*, Institute of Mathematics, National Academy of Sciences of Ukraine
(11673591) 
9:00 a.m.
Asymptotics of strongly continuous semigroups beyond Banach spaces.
Sven A. Wegner*, University of Hamburg
(11674618) 
9:30 a.m.
Break. 
10:30 a.m.
On spectral mapping theorems and asymptotics of scalar type spectral $C_0$Semigroups.
Marat V. Markin*, California State University, Fresno
(11674793) 
11:00 a.m.
Generalizations of theorems of Glimm and Voiculescu in infinite factor von Neuman algebras.
Donald W. Hadwin*, University of New Hampshire
(116747139) 
11:30 a.m.
Ktheory of Etesi $C^*$algebras.
Igor V. Nikolaev*, St. John's University, Staten Island, NY
(11675543)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.11:20 a.m.
Special Session on Algebraic Ktheory, Mathematical Physics, and Perfectoid Spaces, I
Special Session 12, American Mathematical Society
Organizers:
Shanna Dobson, California State University, Los Angeles Shanna.Dobson@calstatela.edu
Michael Maroun,

8:00 a.m.
The phenomenological approach to the dark energy in the accelerating expansion of the universe.
Dr. Reena Tandon*, LOVELY PROFESSIONAL UNIVERSITY
(116783300) 
9:00 a.m.
Relativistic Schrödinger equation and probability currents for quantum particles.
David Carfì*, University of Messina, Italy
(116770230) 
10:00 a.m.
Diamond Holographic Principle and $\mathcal{D}^{\diamond}$Emergent Time.
Shanna Dobson*, California State University Los Angeles
(116711177) 
11:00 a.m.
Correct Hilbert space for the Feynman formulation of Quantum Mechanics.
Tepper L Gill*, Howard University
(11678122)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.11:30 a.m.
Special Session on Categorical and Combinatorial Methods in Representation Theory, and Related Topics, I
Special Session 19, American Mathematical Society
Organizers:
Mee Seong Im, U.S. Naval Academy
Bach Nguyen, Xavier University of Louisiana bnguy38math@gmail.com
Arik Wilbert, University of Georgia

8:00 a.m.
Uncrowding algorithm for hookvalued tableaux: Part I.
Jianping Pan, UC Davis
Joseph Pappe, UC Davis
Wencin Poh, UC Davis
Anne Schilling*, UC Davis
(11670561) 
8:30 a.m.
Uncrowding algorithm for hookvalued tableaux: Part II.
Jianping Pan*, UC Davis
Joseph Pappe, UC Davis
Wencin Poh, UC Davis
Anne Schilling, UC Davis
(11670562) 
9:00 a.m.
$D_6^{(1)}$geometric crystal at spin node and its ultradiscretization.
Kailash Chandra Misra, North Carolina State University
Suchada Pongprasert*, Srinakharinwirot University
(116717117) 
9:30 a.m.
Break. 
10:00 a.m.
A combinatorial model for the decomposition of multivariate polynomial rings as symmetric group modules.
Rosa C Orellana*, Dartmouth College
Mike Zabrocki, York University
(116705193) 
10:30 a.m.
Link homologies and Hilbert schemes via representation theory.
Tina Kanstrup*, UMass Amherst
(116714257) 
11:00 a.m.
Comparing different bases for irreducible symmetric group representations.
Julianna Tymoczko*, Smith College
(116705339)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.12:00 p.m.
Special Session on Commutative Algebra, I
Special Session 21, American Mathematical Society
Organizers:
Juliette Bruce, Mathematical Sciences Research Institute, Berkley
Monica Lewis, University of Michigan
Sean SatherWagstaff, Clemson ssather@clemson.edu

8:00 a.m.
Classification of Frobenius forms in characteristic $p$.
Zhibek Kadyrsizova, Nazarbayev University
Jennifer Kenkel, University of Michigan
Janet Page, University of Michigan
Jyoti Singh, Visvesvaraya National Institute of Technology
Karen E Smith, University of Michigan
Adela Vraciu*, University of South Carolina
Emily Witt, University of Kansas
(116713146) 
8:30 a.m.
Generalized Fdepth and graded nilpotent singularities.
Kyle Logan Maddox*, University of Kansas
Lance Edward Miller, University of Arkansas
(11671378) 
9:00 a.m.
An algebraic invitation to maximum likelihood estimation.
Aida Maraj*, Max Planck Institute for Mathematics in the Sciences
(116714185) 
9:30 a.m.
Informal Discussion. 
10:00 a.m.
Break. 
10:30 a.m.
Triangle Resolutions over Gorenstein Local Rings.
Tyler Dean Anway*, University of Texas, Arlington
(116713337) 
11:00 a.m.
Pure resolutions and bounds on Betti numbers.
Adam Boocher*, University of San Diego
(116713127) 
11:30 a.m.
Generators of residual intersections.
Yevgeniya Tarasova*, Purdue University
(116713266)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.12:00 p.m.
Special Session on Connections between homotopical algebra and geometry, I
Special Session 6, American Mathematical Society
Organizers:
Ryan Grady, Montana State University ryan.grady1@montana.edu
Chris Rogers, University of Nevada, Reno

8:00 a.m.
Lie theory for $L_\infty$algebras.
Chris Rogers, University of Nevada, Reno
Jesse Wolfson*, University of California, Irvine
(116722211) 
9:00 a.m.
An $A_{\infty}$ analog of the GoldmanMillson Theorem in characteristic $p$.
Patricia Milham*, University of Nevada, Reno
(116755217) 
10:00 a.m.
Break. 
10:30 a.m.
Flowing from intersection product to cup product.
Greg Friedman, Texas Christian University
Anibal Medina, Max Planck Institute
Dev Sinha*, University of Oregon
(11675519) 
11:30 a.m.
Natural Stratifications of Reeb Spaces.
Ryan E. Grady, Montana State University
Anna Schenfisch*, Montana State University
(11675563)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.11:20 a.m.
Special Session on Diagrammatic and Combinatorial Methods in Representation Theory, I
Special Session 17, American Mathematical Society
Organizers:
Robert Muth, Washington & Jefferson College rmuth@washjeff.edu rmuth@washjeff.edu
Nick Davidson, Reed College
Peter Tingley, Loyola University Chicago
Tianyuan Xu, University of Colorado Boulder

8:00 a.m.
Real Springer fibers and odd arc algebras.
Jens Niklas Eberhardt, Max Planck Institute for Mathematics (MPIM)
Grégoire Naisse, Max Planck Institute for Mathematics (MPIM)
Arik Wilbert*, University of Georgia
(116717196) 
8:30 a.m.
Type C Webs.
Elijah Bodish, University of Oregon
Ben Elias, University of Oregon
David E. V. Rose*, University of North Carolina at Chapel Hill
Logan Tatham, University of North Carolina at Chapel Hill
(116717172) 
9:00 a.m.
Frobenius Walgebras and traces of Frobenius Heisenberg categories.
Michael Reeks*, Bucknell University
Alistair Savage, University of Ottawa
(116718204) 
9:30 a.m.
Break. 
10:00 a.m.
Representations of the affine BMW category.
Monica Vazirani*, UC Davis
Kevin Walker, Microsoft Station Q
(11670574) 
10:30 a.m.
Weight modules for the insertionelimination algebra.
Ryan Moruzzi, CSU East Bay
Matthew Ondrus, Weber State University
Emilie Wiesner*, Ithaca College
(116717126) 
11:00 a.m.
Bilinear pairings on twodimensional cobordisms and generalizations of the Deligne category.
Radmila Sazdanovic*, NC State University
Mikhail Khovanov, Columbia University
(116781190)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.12:00 p.m.
Special Session on Geodesics in Hyperbolic 2 and 3Manifolds, I
Special Session 10, American Mathematical Society
Organizers:
Maria Trnkova, University of California, Davis
Andrew Yarmola, Princeton University yarmola@math.princeton.edu

8:00 a.m.
Equivalent curves in surfaces.
Hugo Parlier*, University of Luxembourg
Binbin Xu, University of Luxembourg
(11675759) 
8:30 a.m.
Kissing numbers of hyperbolic manifolds.
Bram Petri*, Sorbonne Université
(116757189) 
9:00 a.m.
Linear programming bounds for hyperbolic surfaces.
Maxime Fortier Bourque*, University of Glasgow
Bram Petri, Sorbonne Université
(116751225) 
9:30 a.m.
Informal Discussion. 
10:00 a.m.
Break. 
10:30 a.m.
Systoles of arithmetic locally symmetric spaces.
Benjamin Linowitz*, Oberlin College
(11675714) 
11:00 a.m.
The extremal length systole of the Bolza surface.
Maxime Fortier Bourque, University of Glasgow
Didac MartinezGranado, University of California, Davis
Franco Vargas Pallete*, Yale University
(116730292) 
11:30 a.m.
Effective countings of filling closed geodesics on hyperbolic surfaces.
Francisco AranaHerrera*, Stanford University
(116751181)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.12:10 p.m.
Special Session on Geometric Analysis, I
Special Session 22, American Mathematical Society
Organizers:
Ovidiu Munteanu, University of Connecticut ovidiu.munteanu@uconn.edu
David Bao, San Francisco State University

8:00 a.m.
Mean curvature flow with generic initial data.
Otis Chodosh, Stanford University
Kyeongsu Choi, Korean Institute for Advanced Study
Christos Mantoulidis*, Brown University
Felix Schulze, University of Warwick
(11675380) 
9:00 a.m.
Ancient solutions to mean curvature flow.
T Bourni*, University of Tennessee, Knoxville
M Langford, University of Tennessee, Knoxville
G Tinaglia, King's College London
(11675323) 
9:50 a.m.
Break. 
10:30 a.m.
Mathematical exposition in differential geometry and geometric analysis.
Bennett Chow*, University of California, San Diego
(1167534) 
11:30 a.m.
Variational theory for relative expander entropy.
Jacob Bernstein, Johns Hopkins University
Lu Wang*, California Institute of Technology
(11675384)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.11:50 a.m.
Special Session on Localization and delocalization in ergodic quantum systems, I
Special Session 2, American Mathematical Society
Organizers:
Ilya Kachkovskiy, Michigan State University ikachkov@msu.edu
Wencai Liu, Texas A&M University
Rodrigo Matos, Texas A&M University

8:00 a.m.
An effective equation to study Bose gases at all densities.
Eric A. Carlen, Rutgers University
Markus Holzmann, University of Grenoble
Ian Jauslin*, Princeton University
Elliott H. Lieb, Princeton University
(116782279) 
8:30 a.m.
Theory of ergodic quantum processes.
Ramis Movassagh, IBM
Jeffrey Schenker*, Michigan State University
(116781328) 
9:00 a.m.
Entanglement entropy in the Heisenberg XXZ model.
Christoph Fischbacher*, University of California, Irvine
(116782219) 
9:30 a.m.
Break. 
10:30 a.m.
Dispersion relations and spectra of periodically perforated structures.
Peter Kuchment*, Texas A&M University
Jari Taskinen, University of Helsinki
(116735314) 
11:00 a.m.
Universality of nodal count statistics for large quantum graphs.
Lior Alon, Institute for Advanced Study, Princeton
Ram Band, Technion  Israel Institute of Technology
Gregory Berkolaiko*, Texas A&M University
(11675886) 
11:30 a.m.
Limits of quantum graph operators with shrinking edges.
Selim Sukhtaiev*, Auburn University
(116734278)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.12:30 p.m.
Special Session on Quivers, Tensors, and Their Applications, I
Special Session 20, American Mathematical Society
Organizers:
Visu Makam, Institute for Advanced Study
Francesca Gandini, Kalamazoo College francesca.gandini@kzoo.edu
Alana Huszar, University of Michigan
Robert Cochrane, University of Michigan

8:00 a.m.
Subrank, partition rank and slice rank.
Jeroen Zuiddam*, NYU
(116715235) 
8:30 a.m.
Improved explicit upper bounds for the Cap Set Problem.
Zhi Jiang*, University of Michigan, Ann Arbor
(11671592) 
9:00 a.m.
The Waring support rank of the elementary symmetric polynomials.
Kevin Pratt*, Carnegie Mellon University
(116768326) 
9:30 a.m.
Break. 
10:30 a.m.
A refined laser method and faster matrix multiplication.
Josh Alman*, Harvard
Virginia Vassilevska Williams, MIT
(116768251) 
11:00 a.m.
Noncommutative rank and stability of Quiver representations.
Alana Huszar*, University of Michigan
Harm Derksen, Northeastern University
(116715170) 
11:30 a.m.
Tensor algebras in finite tensor categories.
Pavel Etingof, MIT
Ryan Kinser*, University of Iowa
Chelsea Walton, Rice University
(116718167) 
12:00 p.m.
Invariants of Hopf actions on path algebras of quivers.
Ana Elena Berrizbeitia*, Colorado Mesa University
(116716160)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.12:00 p.m.
Special Session on Research in Mathematics by Early Career Graduate Students, I
Special Session 8, American Mathematical Society
Organizers:
Michael Bishop, California State University, Fresno
Marat V. Markin, California State University, Fresno mmarkin@csufresno.edu
Khang Tran, California State University, Fresno

8:00 a.m.
Zeros of a binomial combination of Chebyshev polynomials.
Summer Al Hamdani*, California State University, Fresno
(11671188) 
8:30 a.m.
Volumes of hyperbolic truncated tetrahedra and the BlochWigner dilogarithm.
Jihoon Sohn*, University of Southern California
(116751304) 
9:00 a.m.
Mathematical and network models reveal significant developmental deformities induced by the ecotoxicological contaminant Tris(4chlorophenyl)methanol (TCPMOH) in zebrafish (Danio rerio).
Ashley V Schwartz*, San Diego State University Computational Science Research Center
Karilyn E Sant, San Diego State University School of Public Health
Uduak Z George, San Diego State University Department of Mathematics and Statistics
(116792336) 
9:30 a.m.
Break. 
10:30 a.m.
A relative fractal drum for spacefilling curves.
Adam D Richardson*, University of California, Riverside
(116728333) 
11:00 a.m.
On resurgent analysis of explicit formulae in fractal geometry.
Will Hoffer*, University of California, Riverside
(116751151) 
11:30 a.m.
Efimov Ktheory of Diamonds.
Shanna Dobson*, Los Angeles
(1167111)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.11:30 a.m.
Special Session on Women in Commutative Algebra  One hundred years of Idealtheorie in Ringbereichen, I
Special Session 7, American Mathematical Society
Organizers:
Eloísa Grifo, University of California, Riverside
Alessandra Costantini, University of California, Riverside

8:00 a.m.
DG algebra resolutions of quotients by weak complete intersection ideals.
Claudia Miller*, Syracuse University
Hamid Rahmati, University of Nebraska  Lincoln
Zheng Yang, Penn State  Chengdu
(116713321) 
8:30 a.m.
The Fedder action and a simplicial complex of local cohomologies.
Monica Lewis*, University of Michigan
Eric Canton, Eau Claire, WI
(116713198) 
9:00 a.m.
Extremal singularities in positive characteristic.
Zhibek Kadyrsizova, Nazarbayev University
Jennifer Kenkel, University of Michigan
Janet Page*, University of Michigan
Jyoti Singh, Visvesvaraya National Institute of Technology
Karen Smith, University of Michigan
Adela Vraciu, University of South Carolina
Emily Witt, University of Kansas
(116713218) 
9:30 a.m.
Break. 
10:30 a.m.
The theory of trace modules over commutative rings.
Haydee Lindo*, Harvey Mudd College
(116713307) 
11:00 a.m.
Degenerations of matrix Schubert varieties through bumpless pipe dreams.
Patricia Klein*, University of Minnesota
Anna Weigandt, University of Michigan
(116713208)

8:00 a.m.

Saturday May 1, 2021, 8:00 a.m.10:30 a.m.
Contributed Paper Session on AMS Contributed Paper Session, I
Contributed Paper Session, American Mathematical Society
Moderators:
Asiyeh Rafieipour, Ohio University

8:15 a.m.
Generalized Eulerian $\mathcal{D}$modules in char $p>0$.
Aarti Patle*, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra440010, India.
Jyoti Singh, Visvesvaraya National Institute of Technology, Nagpur, Maharashtra440010, India.
(116713287) 
8:30 a.m.
Fully regular sets of an imaginary space.
Rasulkhozha Sultonkhozhaevich Sharafiddinov*, Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Ulugbek, Tashkent 100214, Uzbekistan
(116703129) 
8:45 a.m.
What You Have Leftover is Perfect: Enumerating the PSR Divisors.
Isaac Armando Reiter*, Kutztown University of Pennsylvania
Ju Zhou, Kutztown University of Pennsylvania
(11671160) 
9:00 a.m.
Zero distribution of a Sheffer sequence.
GiSang Cheon, Sungkyunkwan university
Tamas Forgacs, California State University, Fresno
Hana Kim, Sungkyunkwan university
Khang Tran*, California State University, Fresno
(116730103) 
9:15 a.m.
Sigma shaped bifurcation curves.
Ananta Acharya*, UNC Greensboro
Nalin Fonseka, Carolina University
Juan Quiroa, UNC Greensboro
Ratnasingham Shivaji, UNC Greensboro
(116735165) 
9:30 a.m.
Constructing low rank string Cgroups of fixed permutation degree.
Mark Mixer*, Wentworth Institute of Technology
(116720288) 
9:45 a.m.
A characterization of unit group of the monoid structure on the the set of all binary operations over a fixed set.
Asiyeh Rafieipour*, Ohio University
Sergio R. LopezPermouth, Ohio University
Isaac Owusu Mensa, Ohio University
(11672087) 
10:00 a.m.
25 partition types of Tetrahedra.
Derege H Mussa*, University of Texas at Dallas
Workineh Shewangizaw, Adama university
(116751291) 
10:15 a.m.
Break.

8:15 a.m.

Saturday May 1, 2021, 8:30 a.m.12:00 p.m.
Special Session on Algebraic and Combinatorial Aspects of Polytopes, I
Special Session 14, American Mathematical Society
Organizers:
Federico Ardila, San Francisco State University and Los Andes University
Laura Escobar, Washington University in St. Louis
Raul Penaguiao, University of Zurich raul.penaguiao@math.uzh.ch

8:30 a.m.
The determinant of a hypergeometric period matrix.
Hery Randriamaro*, Universität Kassel
(11670583) 
9:00 a.m.
Triangulations of Amplituhedron: a fiberbased approach beyond polytopes.
Fatemeh Mohammadi*, Ghent University
(1167057) 
9:30 a.m.
Lineup polytopes.
Federico Castillo*, Max Planck Institute for natural sciences
J P Labbe, Freie Universität Berlin
A Padrol, Sorbonne Université
E Philippe, École Normale Supérieure de Paris
(116705197) 
10:00 a.m.
Break. 
10:30 a.m.
A combinatorial approach to Minkowski tensors of polytopes.
Niklas Livchitz, Freie Universität Berlin
Büşra Sert, Dresden Technical University
Amy Wiebe*, Freie Universität Berlin
(116705191) 
11:00 a.m.
An algebraic approach to projective uniqueness with an application to order polytopes.
Juan Camilo Torres*, Universidad de los Andes
Tristram Bogart, Universidad de los Andes
Joao Gouveia, University of Coimbra
(116752173) 
11:30 a.m.
Logarithmic concavity of Schur and related polynomials.
June Huh, Stanford University
Jacob P. Matherne*, University of Oregon/University of Bonn
Karola Mészáros, Cornell University
Avery St. Dizier, University of Illinois at UrbanaChampaign
(116705286)

8:30 a.m.

Saturday May 1, 2021, 8:30 a.m.12:00 p.m.
Special Session on Analysis, Combinatorics, and Geometry of Fractals, I
Special Session 4, American Mathematical Society
Organizers:
Kyle Hambrook, San Jose State University kyle.hambrook@sjsu.edu
ChunKit Lai, San Francisco State University

8:30 a.m.
Decay of Fourier transforms of fractal measures.
Jialun Li*, University of Zurich
(116742226) 
9:00 a.m.
Fourier analytic properties of fractal measures on curves.
Kyle Hambrook*, San Jose State University
Huijun Yu, University of Rochester
(116742303) 
9:30 a.m.
Additive energy of regular measures in one and higher dimensions, and the fractal uncertainty principle.
Laura T Cladek*, UCLA
Terence ChiShen Tao, UCLA
(116742270) 
10:00 a.m.
Break. 
10:30 a.m.
New dimension bounds for pinned distance sets.
Pablo Shmerkin*, University of British Columbia
(116742202) 
11:00 a.m.
Volumes spanned by $k$ point configurations in $\mathbb{R}^d$.
Alex K McDonald*, University of Rochester
(11674245) 
11:30 a.m.
Uniform distribution, fractals, and combinatorial geometry.
Ayla Gafni, University of Mississippi
Alex Iosevich*, University of Rochester
Emmett Wyman, Northwestern University
(116742299)

8:30 a.m.

Saturday May 1, 2021, 8:30 a.m.11:50 a.m.
Special Session on Differential Geometry and Geometric PDE, I
Special Session 1, American Mathematical Society
Organizers:
Alfonso Agnew, California State University, Fullerton
Nicholas Brubaker, California State University, Fullerton
Thomas Murphy, California State University, Fullerton tmurphy@fullerton.edu
Shoo Seto, California State University, Fullerton
Bogdan Suceavă, California State University, Fullerton

8:30 a.m.
Pointwise lower scalar curvature bounds for $C^0$ metrics via regularizing Ricci flow.
Paula BurkhardtGuim*, University of California, Berkeley
(116753158) 
9:30 a.m.
Break. 
10:00 a.m.
The Spectrum of the Laplacian on forms over open manifolds.
Zhiqin Lu*, UC Irvine
(116758136) 
11:00 a.m.
Quasiconformal maps on metric 4spheres.
Paul Yang*, Princeton University.
SunYung A Chang, Princeton University
Eden Prywes, Princeton University
(116753175)

8:30 a.m.

Saturday May 1, 2021, 8:30 a.m.12:00 p.m.
Special Session on Geometric and Categorical Methods in Representation Theory, I
Special Session 16, American Mathematical Society
Organizers:
Ana Balibanu, Harvard University
Daniele Rosso, Indiana University Northwest drosso@iu.edu
Jonathan Wang, Massachusetts Institute of Technology

8:30 a.m.
Singular Hodge theory for combinatorial geometries.
Tom Braden, University of Massachusetts Amherst
June Huh, Stanford University
Jacob P. Matherne*, University of Oregon/University of Bonn
Nicholas Proudfoot, University of Oregon
Botong Wang, University of Wisconsin Madison
(116705284) 
9:00 a.m.
On the center of the small quantum group.
Pablo Boixeda Alvarez*, Institute for Advanced Study
(116722296) 
9:30 a.m.
Wonderful compactification of a Cartan subalgebra of a semisimple Lie algebra.
Sam Evens, University of Notre Dame
Yu Li*, University of Chicago
(116714269) 
10:00 a.m.
Break. 
10:30 a.m.
Exotic Springer fibers and blob algebras.
Neil Saunders, University of Greenwich
Arik Wilbert*, University of Georgia
(116714195) 
11:00 a.m.
A skein theoretic CarlssonMellit algebra.
Nicolle Gonzalez*, UCLA
Matt Hogancamp, Northeastern University
(116718280) 
11:30 a.m.
The elliptic Hall algebra and the quantum Heisenberg category.
Youssef Mousaaid, University of Ottawa
Alistair Savage*, University of Ottawa
(11671785)

8:30 a.m.

Saturday May 1, 2021, 8:30 a.m.11:00 a.m.
Special Session on Nonlinear PDEs and fluid dynamics, I
Special Session 13, American Mathematical Society
Organizers:
Igor Kukavica, University of Southern California kukavica@usc.edu
Juhi Jang, University of Southern California
Wojciech Ozanski, University of Southern California

8:30 a.m.
Locally dissipative solutions of the Euler equations.
Camillo De Lellis*, Institute for Avdanced Study
(11673558) 
9:00 a.m.
Almost everywhere smoothness for the supercritical SQG equation.
Silja Haffter*, EPFL
(116735130) 
9:30 a.m.
Global existence for the 2D KuramotoSivashinsky equation.
Anna L Mazzucato*, Penn State University
(116735154) 
10:00 a.m.
Long time behavior for the complex modified Kortewegde Vries equation.
Gavin Stewart*, New York University
(116735247) 
10:30 a.m.
The affine motion of 2d incompressible ideal fluids surrounded by vacuum.
Thomas C Sideris*, University of California, Santa Barbara
Steve Shkoller, University of California, Davis
Jay Roberts, MIT Lincoln Laboratory
(116735104)

8:30 a.m.

Saturday May 1, 2021, 8:30 a.m.11:30 a.m.
Special Session on Regularity Theory for Linear and Nonlinear PDEs, I
Special Session 11, American Mathematical Society
Organizers:
Zongyuan Li, Rutgers University zongyuan.li@rutgers.edu
Weinan Wang, University of Arizona
Xueying Yu, Massachusetts Institute of Technology

8:30 a.m.
Regular solutions of the stationary NavierStokes equations on high dimensional Euclidean space.
Yanyan Li*, Rutgers University
Zhuolun Yang, Rutgers Univeresity
(116735210) 
9:00 a.m.
Stabilizing phenomenon for incompressible fluids.
Jiahong Wu*, Oklahoma State University
(116735241) 
9:30 a.m.
Informal Discussion. 
10:00 a.m.
Lp estimates for degenerate Kolmogorov equations.
Hongjie Dong*, Brown University
Timur Yastrzhembskiy, Brown University
(116735161) 
10:30 a.m.
Optimal regularity for an obstacle problem with log singularity.
Dennis Kriventsov*, Rutgers University
(11673540) 
11:00 a.m.
Informal Discussion.

8:30 a.m.

Saturday May 1, 2021, 8:30 a.m.11:50 a.m.
Special Session on Topological Perspectives in Graph Theory, Classical and Recent, I
Special Session 3, American Mathematical Society
Organizers:
Jonathan L. Gross, Columbia University gross@cs.columbia.edu
Timothy Sun, San Francisco State University
Thomas W. Tucker, Colgate University

8:30 a.m.
Kirchhoff Index for circulant graphs.
Alexander Mednykh*, Sobolev Institute of Mathematics
Ilya Mednykh, Sobolev Institute of Mathematics
(11670596) 
9:00 a.m.
Embeddings of action graphs.
Tomaž Pisanski*, University of Primorska
Thomas W Tucker, Colgate University
(11670594) 
9:30 a.m.
Random simplehomotopy theory.
Frank H Lutz*, TU Berlin
(116757201) 
10:00 a.m.
Break. 
10:30 a.m.
The critical group of an embedded graph.
Criel Merino, Universidad nacional Autónoma de México
Iain Moffatt*, Royal Holloway, University of London
Steven D. Noble, Birkbeck, University of London
(116705138) 
11:00 a.m.
Types of embedded graphs, and their Tutte polynomials.
Stephen Huggett*, Liskeard, Cornwall
(116705142) 
11:30 a.m.
On representation of the automorphism group of a graph in a unimodular group.
Roman Nedela*, Zapadoceska Univerzita v Plzni
(11670529)

8:30 a.m.

Saturday May 1, 2021, 10:30 a.m.12:40 p.m.
Contributed Paper Session, II
Contributed Paper Session, American Mathematical Society
Chairs:
Aleksey S. Telyakovskiy, University of Nevada

10:45 a.m.
The HirotaMiwa equation on a time scale.
Gro Hovhannisyan, Kent State University
Oliver Ruff*, Kent State University
(116735301) 
11:00 a.m.
Confidence that several targets will be hit simultaneously.
Rod A. Freed*, California State University Dominguez Hills
(11676079) 
11:15 a.m.
Novel, interpretable machine learning applications for disaster assessment and relief using satellite imagery.
Thomas Y Chen*, Pine Brook, NJ
(116786342) 
11:30 a.m.
Minimizing disease spread on a quarantined cruise ship: A model of COVID19 with asymptomatic infections.
Berlinda Batista, Howard University
Drew Dickenson, Howard University
Katharine Gurski, Howard University
Malick Kebe*, Howard University
Naomi Rankin, Howard University
(11679227) 
11:45 a.m.
Approximate solution to the generalized Boussinesq equation.
Aleksey S Telyakovskiy*, University of Nevada, Reno
(116776340) 
12:00 p.m.
Landau type inequalities for functions with values in Lspaces and their applications.
Vira Babenko*, Drake University
Vladyslav Babenko, Dnipro National University, Ukraine
(116746330) 
12:15 p.m.
Factors significantly contributing to improve students' grades over the semester in college algebra and precalculus.
Kashi N Neupane*, University of North Georgia
(116797322) 
12:30 p.m.
Rosette harmonic mappings and minimal surfaces.
Jane M McDougall*, Colorado College
Sohair Abdullah, University of Wisconsin
Lauren Stierman, Madison, Wisconsin
(11675316)

10:45 a.m.

Saturday May 1, 2021, 2:00 p.m.5:20 p.m.
Special Session on Advances in Functional Analysis and Operator Theory, II
Special Session 9, American Mathematical Society
Organizers:
Michel L. Lapidus, University of California, Riverside
Marat V. Markin, California State University, Fresno mmarkin@csufresno.edu
Igor Nikolaev, St. John's University

2:00 p.m.
Metric convergence of spectral triples on the Sierpinski Gasket and other fractal curves.
Therese Landry*, University of California, Riverside
Michel Lapidus, University of California, Riverside
Frederic Latremoliere, University of Denver
(11674672) 
2:30 p.m.
Ideal of Hypercyclic Operators that factor through $\ell^p$.
Asuman G. Aksoy*, Claremont McKenna College
Yunied Puig, Claremont McKenna College
(11674795) 
3:00 p.m.
Flat portions on the boundary of numerical ranges of 4by4 nilpotent matrices.
Mackenzie Cox, Sunnyvale, CA
Weston M. Grewe, University of Colorado at Denver
Grace K. Hochrein, University of Michigan
Linda J. Patton*, Cal Poly San Luis Obispo
Ilya M. Spitkovsky, New York University Abu Dhabi
(116715194) 
3:30 p.m.
Break. 
4:00 p.m.
Problems in Operator Theory and Mathematical Physics.
Michel L. Lapidus*, University of California, Riverside
(116746249) 
5:00 p.m.
Rigid C*tensor categories of bimodules over GJS C*algebras.
Michael Hartglass*, Santa Clara University
Roberto Hernandez Palomares, Ohio State University
(116746302)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.6:00 p.m.
Special Session on Algebraic Ktheory, Mathematical Physics, and Perfectoid Spaces, II
Special Session 12, American Mathematical Society
Organizers:
Shanna Dobson, California State University, Los Angeles Shanna.Dobson@calstatela.edu
Michael Maroun,

2:00 p.m.
Generalized nonlinear Schrodinger Equation: SelfDynamics by convolution.
Michael Maroun*, Boston, MA
(116781178) 
3:00 p.m.
Direct and inverse scattering problems for the firstorder discrete system associated with the derivative NLS system.
Ramazan Ercan*, Woodbury University, Department of Mathematics
Tuncay Aktosun, The University of Texas at Arlington, Department of Mathematics
(116781258) 
4:00 p.m.
Langlands reciprocity for $C^*$algebras.
Igor V. Nikolaev*, St. John's University, Staten Island, NY
(11671142) 
4:30 p.m.
Break. 
5:00 p.m.
Discussion.

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:30 p.m.
Special Session on Algebraic and Combinatorial Aspects of Polytopes, II
Special Session 14, American Mathematical Society
Organizers:
Federico Ardila, San Francisco State University and Los Andes University
Laura Escobar, Washington University in St. Louis
Raul Penaguiao, University of Zurich raul.penaguiao@math.uzh.ch

2:00 p.m.
The stresses on centrally symmetric complexes and the lower bound theorems.
Isabella Novik*, University of Washington
Hailun Zheng, University of Copenhagen
(116705184) 
2:30 p.m.
Generators for type B permutahedra via McMullen's polytope algebra.
Jose Bastidas*, Cornell University
(116705106) 
3:00 p.m.
Pairwise completability for 2Simple minded collections.
Emily Barnard*, DePaul University
Eric Hanson, Norwegian University of Science and Technology
(116705317) 
3:30 p.m.
Break. 
4:00 p.m.
Computing volumes of generalized permutahedra via moduli spaces of curves.
Jeshu Dastidar*, San Francisco State University
(116705261) 
4:30 p.m.
Combinatorial mutation equivalence of poset polytopes.
Akihiro Higashitani*, Osaka University
(11670589) 
5:00 p.m.
A proof of Grünbaum's lower bound conjecture for general polytopes, and strongly regular CW spheres.
Lei Xue*, University of Washington, Seattle
(116705260)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:20 p.m.
Special Session on Categorical and Combinatorial Methods in Representation Theory, and Related Topics, II
Special Session 19, American Mathematical Society
Organizers:
Mee Seong Im, U.S. Naval Academy
Bach Nguyen, Xavier University of Louisiana bnguy38math@gmail.com
Arik Wilbert, University of Georgia

2:00 p.m.
Quantum Weyl algebras for homogeneous spaces.
Gail Letzter*, National Security Agency
Siddhartha Sahi, Rutgers University
Hadi Salmasian, University of Ottawa
(116717118) 
2:30 p.m.
Contravariant duality for Whittaker modules.
Anna M Romanov*, University of Sydney
Adam Brown, Institute for Science and Technology Austria
(116722140) 
3:00 p.m.
Two boundary degenerate affine Hecke (Clifford) algebras for Lie super algebras $\mathfrak{gl}(mn)$ and $\mathfrak{q}(n)$.
Georgia Benkart, University of WisconsinMadison
Rekha Biswal, Max Planck Institute for Mathematics
Ellen Kirkman, Wake Forest University
Van Nguyen, US Naval Academy
Jieru Zhu*, Okinawa Institute of Science and Technology
(116716137) 
3:30 p.m.
Break. 
4:00 p.m.
Steinberg slices in quasiPoisson varieties.
Ana Silvia Balibanu*, Harvard University
(116714289) 
4:30 p.m.
From $q$ to $\hbar$.
Anne Dranowski*, Institute for Advanced Study
Elie Casbi, Bonn
Joel Kamnitzer, University of Toronto
(116705243) 
5:00 p.m.
TALK CANCELLED: Generalized Demazure Modules and connections with Cluster Algebras.
Vyjayanthi Chari*, University of California,
(116717236)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.6:30 p.m.
Special Session on Commutative Algebra, II
Special Session 21, American Mathematical Society
Organizers:
Juliette Bruce, Mathematical Sciences Research Institute, Berkley
Monica Lewis, University of Michigan
Sean SatherWagstaff, Clemson ssather@clemson.edu

2:00 p.m.
Local duality and hypergeometric functions in codimension 2.
Roberto Barrera, Texas State University
Christine Berkesch*, University of Minnesota
Laura Felicia Matusevich, Texas A&M University
(116713150) 
2:30 p.m.
A CayleyBacharach theorem and plane configurations.
Jake Levinson*, Simon Fraser University
Brooke Ullery, Emory University
(116713209) 
3:00 p.m.
Differential operators on singular rings and the global geometry of projective varieties.
Devlin Mallory*, University of Michigan
(11671482) 
3:30 p.m.
Informal Discussion. 
4:00 p.m.
Geometric equations for matroid varieties.
Ashley K Wheeler*, Mount Holyoke College
Jessica Sidman, Mount Holyoke College
Will Traves, US Naval Academy
(116713228) 
4:30 p.m.
Singularities of nested Hilbert schemes of points on a surface.
Ritvik Ramkumar*, University of California, Berkeley
Alessio Sammartano, Politecnico di Milano
(116713212) 
5:00 p.m.
Algebraic geometry of curvature.
Madeleine Weinstein*, UC Berkeley
Kristian Ranestad, University of Oslo
Paul Breiding, University of Kassel
(116714110) 
5:30 p.m.
Discussion.

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:40 p.m.
Special Session on Connections between homotopical algebra and geometry, II
Special Session 6, American Mathematical Society
Organizers:
Ryan Grady, Montana State University ryan.grady1@montana.edu
Chris Rogers, University of Nevada, Reno

2:00 p.m.
Expansions, completions and automorphisms of welded tangled foams.
Zsuzsanna Dancso, University of Sydney
Iva Halacheva, Northeastern University
Marcy Robertson*, University of Melbourne
(116755220) 
3:00 p.m.
The combinatorics of configuration spaces of $\mathbb{R}^n$.
Anna Cepek*, Bozeman, MT
(11675753) 
3:30 p.m.
Break. 
4:00 p.m.
Higher homotopical structures in symplectic geometry.
Hiro Lee Tanaka*, Texas State University
(116755131) 
5:00 p.m.
Orientation twisted transgression in representation theory and physics.
Matthew B. Young*, Utah State University
(11671869)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:00 p.m.
Special Session on Diagrammatic and Combinatorial Methods in Representation Theory, II
Special Session 17, American Mathematical Society
Organizers:
Robert Muth, Washington & Jefferson College rmuth@washjeff.edu rmuth@washjeff.edu
Nick Davidson, Reed College
Peter Tingley, Loyola University Chicago
Tianyuan Xu, University of Colorado Boulder

2:00 p.m.
Braid group actions, crystals, and cacti.
Iva Halacheva*, Northeastern University
Tony Licata, Australian National University
Ivan Losev, Yale University
Oded Yacobi, University of Sydney
(116705252) 
2:30 p.m.
Rigged configurations for generalized KacMoody algebras.
Ben Salisbury*, Central Michigan University
Travis Scrimshaw, The University of Queensland
(116705248) 
3:00 p.m.
Lmatrices of quiver mutations.
KyuHwan Lee*, University of Connecticut
Kyungyong Lee, University of Alabama
Matthew R. Mills, Michigan State University
(116716152) 
3:30 p.m.
Break. 
4:00 p.m.
How do I lower thee? Let me count the ways.
Anne Dranowski*, Institute for Advanced Study
Joel Kamnitzer, University of Toronto
Balazs Elek, Cornell
Calder MortonFerguson, MIT
Tanny Libman, UCSD
(116706255) 
4:30 p.m.
Transitioning between the polytabloid and web bases for the Specht modules.
Jieru Zhu*, Okinawa Institute of Science and Technology
Mee Seong Im, US Naval Academy
(116716116)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.4:50 p.m.
Special Session on Differential Geometry and Geometric PDE, II
Special Session 1, American Mathematical Society
Organizers:
Alfonso Agnew, California State University, Fullerton
Nicholas Brubaker, California State University, Fullerton
Thomas Murphy, California State University, Fullerton tmurphy@fullerton.edu
Shoo Seto, California State University, Fullerton
Bogdan Suceavă, California State University, Fullerton

2:00 p.m.
Relative volume comparison for integral Ricci curvature and some applications.
Lina Chen, Nanjing University
Guofang Wei*, UC Santa Barbara
(116753128) 
3:00 p.m.
Infinite families of manifolds with positive intermediate Ricci curvature.
Miguel DomínguezVázquez, Universidade de Santiago de Compostela
David GonzálezÁlvaro, Universidad Politécnica de Madrid
Lawrence Mouillé*, Rice University
(116753294) 
3:30 p.m.
Break. 
4:00 p.m.
The space of positive Ricci curvature metrics on spin manifolds.
Bradley Lewis Burdick*, University of California, Riverside
(11675364)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.3:20 p.m.
Special Session on Geodesics in Hyperbolic 2 and 3Manifolds, II
Special Session 10, American Mathematical Society
Organizers:
Maria Trnkova, University of California, Davis
Andrew Yarmola, Princeton University yarmola@math.princeton.edu

2:00 p.m.
Tilings, cusp areas and length spectrum.
Matthias Goerner*, Pixar Animation Studios
Robert C Haraway, III, Independent
Neil Hoffman, Oklahoma State University
Maria Trnkova, University of California, Davis
(116757271) 
2:30 p.m.
Short geodesics under Dehn filling.
David Futer*, Temple University
Jessica S. Purcell, Monash University
Saul Schleimer, University of Warwick
(116757121) 
3:00 p.m.
Effective drilling and filling tame hyperbolic 3manifolds.
David Futer, Temple University
Jessica S. Purcell*, Monash University
Saul Schleimer, University of Warwick
(116757114)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.3:40 p.m.
Special Session on Geometric Analysis, II
Special Session 22, American Mathematical Society
Organizers:
Ovidiu Munteanu, University of Connecticut ovidiu.munteanu@uconn.edu
David Bao, San Francisco State University

2:00 p.m.
Scalar curvature and soap bubbles.
Otis Chodosh*, Stanford University
(1167518) 
3:00 p.m.
A family of 3d steady gradient solitons that are flying wings.
Yi Lai*, UC Berkeley
(1167533)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:30 p.m.
Special Session on Geometric and Categorical Methods in Representation Theory, II
Special Session 16, American Mathematical Society
Organizers:
Ana Balibanu, Harvard University
Daniele Rosso, Indiana University Northwest drosso@iu.edu
Jonathan Wang, Massachusetts Institute of Technology

2:00 p.m.
Geometry of generalized affine Springer fibers.
Jingren Chi*, University of Maryland
(116714145) 
2:30 p.m.
Support varieties and complexity for Lie superalgebras of type P.
Brian Boe, University of Georgia
Jonathan Kujawa*, University of Oklahoma
(11671766) 
3:00 p.m.
Symplectic reduction along a submanifold and the MooreTachikawa TQFT.
Maxence Mayrand*, University of Toronto
(116751344) 
3:30 p.m.
Break. 
4:00 p.m.
A Thurston compactification of Bridgeland stability space.
Asilata Bapat*, Australian National University
Anand Deopurkar, Australian National University
Anthony M Licata, Australian National University
(116718262) 
4:30 p.m.
Twisted Dmodules on the affine flag variety and Whittaker modules.
Anna M Romanov*, University of Sydney
Emily Cliff, University of Sydney
(116720141) 
5:00 p.m.
Categorification of Schur algebras of Type B and beyond.
Jonathan Kujawa, University of Oklahoma
Yiqiang Li, University at Buffalo
Jieru Zhu*, Okinawa Institute of Science and Technology
(116716223)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.3:50 p.m.
Special Session on How do Industry Professionals Use Big Data?
Special Session 15, American Mathematical Society
Organizers:
Luella Fu, San Francisco State University luella@sfsu.edu

2:00 p.m.
Applications of geometry, topology, differential equations in data science.
Colleen Molloy Farrelly*, Staticlysm and Datasembly
(116700124) 
3:00 p.m.
TALK CANCELLED: The machine learning toolkit in cybersecurity.
Joanna Trinidad Chavez*, Juniper Networks, Inc.
(116700155)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.6:00 p.m.
Special Session on Localization and delocalization in ergodic quantum systems, II
Special Session 2, American Mathematical Society
Organizers:
Ilya Kachkovskiy, Michigan State University ikachkov@msu.edu
Wencai Liu, Texas A&M University
Rodrigo Matos, Texas A&M University

2:00 p.m.
Localization in the continuous spectrum of multilayer Schrödinger operators.
Stephen Shipman*, Louisiana State University
(116747238) 
2:30 p.m.
Lorentz resonance in the homogenization of plasmonic crystals.
Wei Li*, DePaul University
Robert Lipton, Louisiana State University
Matthias Maier, Texas A&M University
(116735132) 
3:00 p.m.
Localization of one and two photons in discrete quantum systems.
Joseph E Kraisler*, Columbia University
(116781318) 
3:30 p.m.
Break. 
4:00 p.m.
Remarks on powerlaw random graphs.
Mei Yin*, University of Denver
(116782171) 
4:30 p.m.
Spectrum of graphene models in magnetic fields.
Rui Han*, Louisiana State University
(116747188) 
5:00 p.m.
Twisted Bilayer Graphene and magic angles in magnetic fields.
Simon Lukas Becker, University of Cambridge
Xiaowen Zhu*, University of California, Irvine
(116737285) 
5:30 p.m.
Informal Discussion.

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.4:30 p.m.
Special Session on Nonlinear PDEs and fluid dynamics, II
Special Session 13, American Mathematical Society
Organizers:
Igor Kukavica, University of Southern California kukavica@usc.edu
Juhi Jang, University of Southern California
Wojciech Ozanski, University of Southern California

2:00 p.m.
Compressible shocks from smooth initial datum.
Vlad Vicol*, New York University
(116735298) 
2:30 p.m.
Global in x stability of Prandtl's boundary layer for 2D, stationary NavierStokes flows.
Sameer Iyer*, Princeton University
Nader Masmoudi, New York University, Courant Institute
(1167359) 
3:00 p.m.
Wellposedness and regularity of solutions to the 3D Euler equations with inflow, outflow.
GungMin Gie, University of Louisville
James P Kelliher*, University of California Riverside
Anna L Mazzucato, Penn State University
(116776265) 
3:30 p.m.
Mach limits in analytic spaces.
Juhi Jang, University of Southern California
Igor Kukavica, University of Southern California
Linfeng Li*, University of Southern California
(116735316) 
4:00 p.m.
Sharp nonuniqueness results for the NavierStokes equations.
Alexey Cheskidov*, University of Illinois at Chicago
Xiaoyutao Luo, Duke University
(116735310)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:00 p.m.
Special Session on Quivers, Tensors, and Their Applications, II
Special Session 20, American Mathematical Society
Organizers:
Visu Makam, Institute for Advanced Study
Francesca Gandini, Kalamazoo College francesca.gandini@kzoo.edu
Alana Huszar, University of Michigan
Robert Cochrane, University of Michigan

2:00 p.m.
Some quantum symmetries of path algebras.
Ryan Kinser, University of Iowa
Amrei Oswald*, University of Iowa
(116716122) 
2:30 p.m.
Total stability functions for Dynkin quivers and almost split sequences.
Yariana Diaz*, University of Iowa
Ryan Kinser, University of Iowa
Cody Gilbert, University of Iowa
(116716232) 
3:00 p.m.
Moduli of representations of algebras.
Cody Matthew Gilbert*, University of Iowa
(116716239) 
3:30 p.m.
Break. 
4:00 p.m.
An upper bound for the Waring rank of the determinant.
Garritt Johns, Boise State University
Zach Teitler*, Boise State University
(11671438) 
4:30 p.m.
The nuclear norm and tensor Kronecker products.
Robert Cochrane*, University of Michigan
(116715174)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.4:20 p.m.
Special Session on Research in Mathematics by Early Career Graduate Students, II
Special Session 8, American Mathematical Society
Organizers:
Michael Bishop, California State University, Fresno
Marat V. Markin, California State University, Fresno mmarkin@csufresno.edu
Khang Tran, California State University, Fresno

2:00 p.m.
Zeros of polynomials generated by a bivariate contiguous relation.
Jack Luong*, California State University, Fresno
Khang Tran, California State University, Fresno
(116730334) 
2:30 p.m.
Characterization of compact operators and an extension to QCompact operators.
Daniel Akech*, Claremont Graduate University
(116747277) 
3:00 p.m.
Of partition congruences and representations of nonnegative integers.
Trevor M Ferguson*, California State University, Fresno
(116711263) 
3:30 p.m.
Break. 
4:00 p.m.
Modeling the risk of SARSCoV2 transmission from environmental surfaces.
Angelica Bloomquist*, San Diego State University
Naveen K Vaidya, San Diego State University
(116792274)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.5:30 p.m.
Special Session on Topological Perspectives in Graph Theory, Classical and Recent, II
Special Session 3, American Mathematical Society
Organizers:
Jonathan L. Gross, Columbia University gross@cs.columbia.edu
Timothy Sun, San Francisco State University
Thomas W. Tucker, Colgate University

2:00 p.m.
On Kainen's conjectures on surface crossing numbers.
Timothy Sun*, San Francisco State University
(11670570) 
2:30 p.m.
PartialTriality Polynomials for Ribbon Graphs, Part I.
Jonathan L Gross*, Columbia University
Thomas W. Tucker, Colgate University
(11670547) 
3:00 p.m.
PartialTriality Polynomials for Ribbon Graphs: Part II.
Thomas W. Tucker*, Colgate University
Jonathan L. Gross, Columbia University
(11670552) 
3:30 p.m.
Break. 
4:00 p.m.
Edgemaximal graphs on surfaces.
James Davies*, Department of Combinatorics and Optimization, University of Waterloo.
Florian Pfender, Department of Mathematical and Statistical Sciences, University of Colorado Denver.
Carsten Thomassen, Department of Applied Mathematics and Computer Science, Technical University of Denmark.
(11670513) 
4:30 p.m.
Partial twuality polynomials.
Qiyao Chen*, Hunan University
Yichao Chen, Suzhou University of Science and technology
Jonathan Gross, Columbia University
(116705159) 
5:00 p.m.
Observations and answers to questions about edgetransitive maps.
Marston D E Conder*, University of Auckland
(11675732)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.3:00 p.m.
Special Session on Women in Commutative Algebra  One hundred years of Idealtheorie in Ringbereichen, II
Special Session 7, American Mathematical Society
Organizers:
Eloísa Grifo, University of California, Riverside
Alessandra Costantini, University of California, Riverside

2:00 p.m.
Toward free resolutions over scrolls.
Laura Felicia Matusevich, Texas A&M University
Aleksandra Sobieska*, University of Wisconsin  Madison
(11671375) 
2:30 p.m.
The top weight cohomology of $\mathcal{A}_{g}$.
Juliette Bruce*, University of California, Berkeley / MSRI
(11671411)

2:00 p.m.

Saturday May 1, 2021, 2:00 p.m.4:00 p.m.
Contributed Paper Session, III
Organizers:
Heather Butler, American Mathematical Society hpb@ams.org

2:00 p.m.
Characterization of $M$compact sets via statistically convergent sequences.
Sudeshna Basu, Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrah, West Bengal, India
Lakshmi Kanta Dey, National Institute of Technology, Durgapur
Susmita Seal*, Ramakrishna Mission Vivekananda Educational and Research Institute
Sumit Som, Adamas Knowledge city
(11674650) 
2:15 p.m.
A bifurcation result for an elliptic problem with superlinear subcritical non linearity on the boundary.
Shalmali Bandyopadhyay*, UNC Greensboro
B Delgado, Universidad Autónoma de Aguascalientes
M Chhetri, UNC Greensboro
N Mavinga, Swarthmore College
R Pardo, Complutense University of Madrid
(116735313) 
2:30 p.m.
TALK CANCELLED: Some new results about scalar curvature.
Otis Chodosh*, Stanford University
(11675317) 
3:00 p.m.
TALK CANCELLED: Simon's OPUC Hausdorff Dimension Conjecture.
David Damanik, Rice University
Shuzheng Guo, Ocean University of China and Rice University
Darren C Ong*, Xiamen University Malaysia
(116747123) 
3:15 p.m.
TALK CANCELLED: Generalized Eulerian graded $\mathcal{D}$modules in char $p>0$.
Aarti Patle*, Visvesvaraya National Institute of Technology, Nagpur(Maharashtra)
Jyoti Singh, Visvesvaraya National Institute of Technology, Nagpur(Maharashtra)
(11671321) 
3:30 p.m.
Break.

2:00 p.m.

Saturday May 1, 2021, 2:30 p.m.5:30 p.m.
Special Session on Regularity Theory for Linear and Nonlinear PDEs, II
Special Session 11, American Mathematical Society
Organizers:
Zongyuan Li, Rutgers University zongyuan.li@rutgers.edu
Weinan Wang, University of Arizona
Xueying Yu, Massachusetts Institute of Technology

2:30 p.m.
Stability of Soliton Solutions for The 4NLS with A Decaying Potential.
TingJian Luo, Guangzhou University
Shijun Zheng*, Georgia Southern University
(11673549) 
3:00 p.m.
Almost sure global wellposedness for the fractional cubic NLS.
Mouhamadou Sy*, University of Virginia
Xueying Yu, MIT
(116735244) 
3:30 p.m.
Informal Discussion. 
4:00 p.m.
The nonlinear Schrödinger equation on the halfplane.
Alex Himonas, University of Notre Dame
Dionyssios Mantzavinos*, University of Kansas
(116735311) 
4:30 p.m.
Random tensors, propagation of randomness, and nonlinear Schrödinger equations.
Haitian Yue*, University of Southern California
Yu Deng, University of Southern California
Andrea Nahmod, University of Massachusetts Amherst
(11673573) 
5:00 p.m.
Informal Discussion.

2:30 p.m.

Saturday May 1, 2021, 4:00 p.m.5:10 p.m.
Contributed Paper Session, IV
Moderators:
Kimberly Seashore, San Francisco State University

4:00 p.m.
General Famous Numbers: StirlingEulerLahBell.
Hungping Tsao*, Novato, California
(1167056) 
4:15 p.m.
Break. 
4:45 p.m.
Pluriclosed flow on Bismutflat backgrounds.
Joshua Jordan*, University of California, Irvine
Mario GarciaFernandez, Universidad Autonoma de Madrid
Jeffery Streets, University of California, Irvine
(116753242) 
5:00 p.m.
Generalization theory of Linear Algebra III.
Christina Pospisil*, USA
(116747272)

4:00 p.m.
Sunday May 2, 2021

Sunday May 2, 2021, 8:00 a.m.1:00 p.m.
Special Session on Advances in Functional Analysis and Operator Theory, III
Special Session 9, American Mathematical Society
Organizers:
Michel L. Lapidus, University of California, Riverside
Marat V. Markin, California State University, Fresno mmarkin@csufresno.edu
Igor Nikolaev, St. John's University

8:00 a.m.
Zeroone law of orbital limit points.
Karl GrosseErdmann*, Université de Mons, Belgium
Antonio Bonilla, Universidad de La Laguna, Spain
(11674756) 
8:30 a.m.
Perturbations of DAEs and chip redesign.
Carsten Trunk*, TU Ilmenau, Germany
(116746325) 
9:00 a.m.
NevanlinnaPick interpolation: a survey of some multivariable generalizations.
Joseph A Ball*, Virginia Tech
(11674799) 
9:30 a.m.
Break. 
10:30 a.m.
The unique everywhere continuous bound state of the Dirac Delta Potential on $\mathbb{R}^2$.
Michael Maroun*, Boston, MA
(116746179) 
11:00 a.m.
Stability results of small diameter properties in Banach spaces.
Sudeshna Basu*, RKMVERI
Susmita Seal, RKMVERI
(11674615) 
11:30 a.m.
Internally Disclosed Sets of a Real Space.
Rasulkhozha Sultonkhozhaevich Sharafiddinov*, Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Ulugbek, Tashkent 100214, Uzbekistan
(11670346) 
12:00 p.m.
Lie centralizers at zero products on a class of operator algebras.
Hoger Ghahramani, Department of Mathematics, University of Kurdistan, P.O. Box 416, Sanandaj, Iran
Wu Jing*, Department of Mathematics & Computer Science, Fayetteville State University, NC 28301
(116747109) 
12:30 p.m.
Quantum posets and quantum powersets.
Andre Kornell*, Tulane University
Bert Lindenhovius, Tulane University
Michael Mislove, Tulane University
(116747343)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.12:00 p.m.
Special Session on Algebraic Ktheory, Mathematical Physics, and Perfectoid Spaces, III
Special Session 12, American Mathematical Society
Organizers:
Shanna Dobson, California State University, Los Angeles Shanna.Dobson@calstatela.edu
Michael Maroun,

8:00 a.m.
Some open problems in the mathematical theory of Feynman path integrals.
Sonia Mazzucchi*, University of Trento
(11676065) 
9:00 a.m.
Philosophy, cognition, and perfectoid diamonds.
Robert Prentner*, Florida Atlantic University, Center for the Future Mind
(116700283) 
10:00 a.m.
Discussion led by Shanna Dobson and Michael Maroun. 
11:00 a.m.
Open problems and conjectures in Number Theory and Arithmetic Geometry.
Michel L. Lapidus*, University of California, Riverside
(116711221)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.11:30 a.m.
Special Session on Categorical and Combinatorial Methods in Representation Theory, and Related Topics, III
Special Session 19, American Mathematical Society
Organizers:
Mee Seong Im, U.S. Naval Academy
Bach Nguyen, Xavier University of Louisiana bnguy38math@gmail.com
Arik Wilbert, University of Georgia

8:00 a.m.
Weight modules over Lie algebras of polynomial vector fields.
Dimitar Grantcharov, University of Texas, Arlington
Vera Serganova*, UC Berkeley
(116717245) 
8:30 a.m.
Braid rigidity for path algebras.
Lilit Martirosyan*, University of North Carolina, Wilmington
Hans Wenzl, University of California, San Diego
(116717115) 
9:00 a.m.
A geometric complete derived invariant for gentle algebras.
Claire Amiot, Université de Grenoble
Sebastian Opper, Charles University, Prague
PierreGuy Plamondon, Université de Versailles
Sibylle Schroll*, University of Cologne
(116716308) 
9:30 a.m.
Break. 
10:00 a.m.
Structure of Grassmannian cluster categories.
Karin Baur*, University of Leeds, University of Graz
(116716166) 
10:30 a.m.
Combinatorics of injective words for TemperleyLieb algebras.
Rachael Boyd*, Max Planck Institute for Mathematics
Richard Hepworth, University of Aberdeen
(116716168) 
11:00 a.m.
Representations of continuous quivers of Type A.
Kiyoshi Igusa, Brandeis University
Job Rock, Boston, Massachusetts
Gordana Todorov*, Northeastern University
(116719259)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.12:00 p.m.
Special Session on Commutative Algebra, III
Special Session 21, American Mathematical Society
Organizers:
Juliette Bruce, Mathematical Sciences Research Institute, Berkley
Monica Lewis, University of Michigan
Sean SatherWagstaff, Clemson ssather@clemson.edu

8:00 a.m.
On the depth and reflexivity of tensor products.
Uyen H Le*, West Virginia University
Olgur Celikbas, West Virginia University
Hiroki Matsui, University of Tokyo
(11671357) 
8:30 a.m.
Subcomplexes of the Koszul Complex.
Maya Banks, University of Wisconsin  Madison
Aleksandra Sobieska*, University of Wisconsin  Madison
(11671376) 
9:00 a.m.
Critical degree and operations on complexes.
Rebekah J. Aduddell*, University of Texas, Arlington
(11671868) 
9:30 a.m.
Informal Discussion. 
10:00 a.m.
Break. 
10:30 a.m.
Ulrich modules do not always exist.
Farrah C Yhee*, University of Michigan
(116713250) 
11:00 a.m.
Measuring Gorensteinness using the trace of the canonical module.
Janet Page*, University of Michigan
(116713267) 
11:30 a.m.
On Stable trace ideals and Arf rings.
Haydee Lindo*, Harvey Mudd College
H Dao, University of Kansas
(116713306)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.12:50 p.m.
Special Session on Connections between homotopical algebra and geometry, III
Special Session 6, American Mathematical Society
Organizers:
Ryan Grady, Montana State University ryan.grady1@montana.edu
Chris Rogers, University of Nevada, Reno

8:00 a.m.
The coalgebraic structure of the chains on a space determines the fundamental group.
Manuel Rivera*, Purdue University
Mahmoud Zeinalian, Lehman College CUNY
Felix Wierstra, University of Paris, Stockholm University
(11675577) 
9:00 a.m.
The simplicial coalgebra of chains determines homotopy types rationally and one prime at a time.
Felix Wierstra*, University of Amsterdam
(116755229) 
9:30 a.m.
Break. 
10:30 a.m.
Complex Lagrangian intersections and applications to skein theory.
Sam Gunningham*, University of Edinburgh
Pavel Safronov, University of Edinburgh
(116755180) 
11:30 a.m.
Skein categories as factorisation homology.
Juliet Cooke*, Max Planck Institute for Mathematics, Bonn
(116718327) 
12:00 p.m.
Dehn invariants for algebraic $K$theory.
Inna I Zakharevich*, Cornell University
(116718101)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.11:50 a.m.
Special Session on Geodesics in Hyperbolic 2 and 3Manifolds, III
Special Session 10, American Mathematical Society
Organizers:
Maria Trnkova, University of California, Davis
Andrew Yarmola, Princeton University yarmola@math.princeton.edu

8:00 a.m.
Short closed geodesics on cusped hyperbolic surfaces.
Thi Hanh Vo*, University of Luxembourg
(116751105) 
8:30 a.m.
Totally geodesic surfaces in twist knot complements.
Khanh Le, Temple University
Rebekah Palmer*, Temple University
(116751153) 
9:00 a.m.
Some elementary correspondence in group theory (with applications to algebra/geometry).
D. B. McReynolds*, Purdue University
(116757293) 
9:30 a.m.
Informal Discussion. 
10:00 a.m.
Break. 
10:30 a.m.
Geodesic currents and the smoothing property.
Didac Martinez Granado*, University of California, Davis
Dylan Thurston, Indiana University, Bloomington
(11675751) 
11:00 a.m.
Volume bounds for collections of simple closed curves.
Tommaso Cremaschi*, University of Southern California
Andrew Yarmola, Princeton University
José Andrés Rodriguez Migueles, LMU Munich
(116757112) 
11:30 a.m.
Infinitely many virtual geometric triangulations.
David Futer, Temple University
Emily Hamilton, California Polytechnic State University, San Luis Obispo
Neil R Hoffman*, Oklahoma State
(116757149)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.11:50 a.m.
Special Session on Localization and delocalization in ergodic quantum systems, III
Special Session 2, American Mathematical Society
Organizers:
Ilya Kachkovskiy, Michigan State University ikachkov@msu.edu
Wencai Liu, Texas A&M University
Rodrigo Matos, Texas A&M University

8:00 a.m.
Reflectionless canonical systems.
Roman Bessonov, St. Petersburg State University
Milivoje Lukic*, Rice University
Peter Yuditskii, Johannes Kepler Universitat Linz
(116747273) 
8:30 a.m.
StahlTotik regularity for Dirac operators.
Benjamin Eichinger, Institute of Analysis, Johannes Kepler University of Linz
Ethan Gwaltney*, Department of Mathematics, Rice University
Milivoje Lukić, Department of Mathematics, Rice University
(116734119) 
9:00 a.m.
On the wellposedness of the derivative nonlinear Schrödinger equation.
Rowan Killip, UCLA
Maria Ntekoume*, Rice University
Monica Visan, UCLA
(116735268) 
9:30 a.m.
Break. 
10:30 a.m.
On the spectra of separable 2D almost Mathieu operators.
Alberto Takase*, University of CaliforniaIrvine
(11673712) 
11:00 a.m.
Arithmetic version of Anderson localization for a class of smooth quasiperiodic Schrödinger operators.
Lingrui Ge*, University of California, Irvine
(116737281) 
11:30 a.m.
Localization and Cantor spectrum for $C^2$ quasiperiodic onedimensional discrete Schrödinger operators.
Yakir Forman*, Yale University
Tom VandenBoom, Yale University
(116737297)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.12:30 p.m.
Special Session on Quivers, Tensors, and Their Applications, III
Special Session 20, American Mathematical Society
Organizers:
Visu Makam, Institute for Advanced Study
Francesca Gandini, Kalamazoo College francesca.gandini@kzoo.edu
Alana Huszar, University of Michigan
Robert Cochrane, University of Michigan

8:00 a.m.
Invariant theory for maximum likelihood estimation.
Carlos Améndola, Technical University of Munich
Kathlén Kohn, KTH Stockholm
Philipp Reichenbach*, Technical University of Berlin
Anna Seigal, University of Oxford
(116714133) 
8:30 a.m.
Maximum likelihood estimation for matrix and tensor normal models.
Harm Derksen*, Northeastern University
Visu Makam, Institute of Advanced Study
Michael Walter, University of Amsterdam
(116715234) 
9:30 a.m.
Break. 
10:30 a.m.
Lower bounds for matrix multiplication.
Joseph M Landsberg*, Texas A&M University
(116714233) 
11:30 a.m.
Border apolarity and border rank of the 3 $\times$ 3 permanent.
Hang Huang*, Texas A&M University
J M Landsberg, Texas A&M University
Austin Conner, Texas A&M University
(116715246) 
12:00 p.m.
Some explicit Waring decompositions of interesting polynomials.
Austin D Conner*, Harvard University
(116715324)

8:00 a.m.

Sunday May 2, 2021, 8:00 a.m.11:20 a.m.
Special Session on Women in Commutative Algebra  One hundred years of Idealtheorie in Ringbereichen, III
Special Session 7, American Mathematical Society
Organizers:
Eloísa Grifo, University of California, Riverside
Alessandra Costantini, University of California, Riverside

8:00 a.m.
Canonical resolutions over Koszul algebras.
Eleonore Faber, University of Leeds
Martina JuhnkeKubitzke, University of Osnabrück
Haydee Lindo, Harvey Mudd College
Miller Claudia, Syracuse University
Rebecca R.G., George Mason University
Alexandra Seceleanu*, University of NebraskaLincoln
(11671326) 
8:30 a.m.
Duality of closures and interiors defined via colons.
Neil Epstein, George Mason University
Rebecca R.G., George Mason University
Janet Vassilev*, University of New Mexico
(116713169) 
9:00 a.m.
Factorization in numerical semigroup algebras.
Austin Antoniou, The Ohio State University
Ranthony A.C. Edmonds*, The Ohio State University
Bethany Kubik, University of Minnesota Duluth
Christopher O'Neill, San Diego State University
Shannon Talbott, Moravian College
(116713329) 
9:30 a.m.
Break. 
10:30 a.m.
Polyhedral resolutions of powers of monomial ideals of projective dimension one.
Susan Cooper, University of Manitoba
Sabine El Khoury, American University of Beirut
Sara Faridi, Dalhousie University
Sarah MayesTang, University of Toronto
Susan Morey*, Texas State University
Liana Sega, University of MissouriKansas City
Sandra Spiroff, University of Mississippi
(116713111) 
11:00 a.m.
TALK CANCELLED: Constructing regular sequences on powers of monomial ideals.
Louiza Fouli*, New Mexico State University
Huy Tài Hà, Tulane University
Susan Morey, Texas State University
(116713206)

8:00 a.m.

Sunday May 2, 2021, 8:30 a.m.12:30 p.m.
Special Session on Analysis, Combinatorics, and Geometry of Fractals, II
Special Session 4, American Mathematical Society
Organizers:
Kyle Hambrook, San Jose State University kyle.hambrook@sjsu.edu
ChunKit Lai, San Francisco State University

8:30 a.m.
On the existence of Riesz bases of exponentials.
Carlos A Cabrelli, IMAS  UBACONICET
Kathryn E Hare, University of Waterloo
Ursula M Molter*, IMAS  UBACONICET
(116742254) 
9:00 a.m.
Translational tilings in lattices.
Rachel Greenfeld*, UCLA
(116705319) 
9:30 a.m.
Quantization for probability distributions.
Mrinal K Roychowdhury*, University of Texas Rio Grande Valley
(116737216) 
10:00 a.m.
Break. 
10:30 a.m.
Dimensionexpanding polynomials and the discretized ElekesRonyai theorem.
Joshua Zahl*, University of British Columbia
(116742200) 
11:00 a.m.
Decoupling for mixedhomogeneous polynomials in $\mathbb R^3$.
Tongou Yang*, University of British Columbia
Jianhui Li, University of Wisconsin, Madison
(116742203) 
11:30 a.m.
Eliminating obstructions for Thurston maps.
Annina Iseli*, University of California, Los Angeles (UCLA)
Mario Bonk, University of California, Los Angeles (UCLA)
Mikhail Hlushchanka, University of Utrecht, Netherlands
(116737276) 
12:00 p.m.
Erdös similarity conjecture on a type of Cantor sets.
ChunKit Lai*, San Francisco State University
Angel Cruz, San Francisco State University
Malabika Pramanik, University of British Columbia
(116728338)

8:30 a.m.

Sunday May 2, 2021, 8:30 a.m.12:00 p.m.
Special Session on Diagrammatic and Combinatorial Methods in Representation Theory, III
Special Session 17, American Mathematical Society
Organizers:
Robert Muth, Washington & Jefferson College rmuth@washjeff.edu rmuth@washjeff.edu
Nick Davidson, Reed College
Peter Tingley, Loyola University Chicago
Tianyuan Xu, University of Colorado Boulder

8:30 a.m.
A multiset partition algebra.
Rosa C Orellana*, Dartmouth College
Mike Zabrocki, York University
(116716192) 
9:00 a.m.
An insertion algorithm on multiset partitions with applications to diagram algebras.
Laura Colmenarejo, University of Massachusetts Amherst
Rosa Orellana, Dartmouth College
Franco Saliola*, Université du Québec à Montréal
Anne Schilling, University of California Davis
Mike Zabrocki, York University
(116705231) 
9:30 a.m.
Break. 
10:30 a.m.
Quasisymmetric Macdonald polynomials.
Sylvie Corteel, University of California, Berkeley
James Haglund, University of Pennsylvania
Olya Mandelshtam, Brown University
Sarah Mason*, Wake Forest University
Lauren Williams, Harvard University
(116705148) 
11:00 a.m.
Kohnert's rule for flagged Schur modules.
Sam Armon, University of Southern California
Sami Assaf*, University of Southern California
Grant Bowling, University of Southern California
Henry Ehrhard, University of Southern California
(11670567) 
11:30 a.m.
Mixing time for Markov chain on linear extensions.
John Rhodes, UC Berkeley
Anne Schilling*, UC Davis
(116705102)

8:30 a.m.

Sunday May 2, 2021, 8:30 a.m.11:50 a.m.
Special Session on Differential Geometry and Geometric PDE, III
Special Session 1, American Mathematical Society
Organizers:
Alfonso Agnew, California State University, Fullerton
Nicholas Brubaker, California State University, Fullerton
Thomas Murphy, California State University, Fullerton tmurphy@fullerton.edu
Shoo Seto, California State University, Fullerton
Bogdan Suceavă, California State University, Fullerton

8:30 a.m.
Steady gradient KahlerRicci solitons.
Ronan J Conlon*, The University of Texas at Dallas
Alix Deruelle, UMR 7586 CNRS  Sorbonne Université  Université de Paris
(116753264) 
9:30 a.m.
Break. 
10:00 a.m.
Classification results for expanding and shrinking gradient KahlerRicci solitons.
Alix Deruelle, Institut de mathematiques de Jussieu
Ronan Conlon, UT Dallas
Song Sun*, UC Berkeley
(116753125) 
11:00 a.m.
Analytic stability conditions for polarised varieties.
Ruadhaí Dervan*, University of Cambridge
(116753163)

8:30 a.m.

Sunday May 2, 2021, 8:30 a.m.12:00 p.m.
Special Session on Geometric and Categorical Methods in Representation Theory, III
Special Session 16, American Mathematical Society
Organizers:
Ana Balibanu, Harvard University
Daniele Rosso, Indiana University Northwest drosso@iu.edu
Jonathan Wang, Massachusetts Institute of Technology

8:30 a.m.
Boxcounting and Quot schemes.
Noah Arbesfeld*, Imperial College London
Yakov Kononov, Columbia University
(116714227) 
9:00 a.m.
On the invariant theory for the commuting scheme.
TsaoHsien Chen*, University of Minnesota
Bao Chau Ngo, University of Chicago
(116722186) 
9:30 a.m.
Towards a Langlands reciprocity for affine qSchur algebras.
Yiqiang Li*, SUNY at Buffalo
(116717182) 
10:00 a.m.
Break. 
10:30 a.m.
Lagrangian correspondences in Schubert calculus for cotangent bundles.
Iva Halacheva*, Northeastern University
Allen Knutson, Cornell University
Paul ZinnJustin, University of Melbourne
(116718253) 
11:00 a.m.
Fusing MV cycles.
Anne Dranowski*, Institute for Advanced Study
Roger Bai, University of Toronto
Joel Kamnitzer, University of Toronto
(116715256) 
11:30 a.m.
TALK CANCELLED: Hamiltonian reduction for affine Grassmannian slices.
Joel Kamnitzer, University of Toronto
Khoa Pham, University of Toronto
Alex Weekes*, University of British Columbia
(116714147)

8:30 a.m.

Sunday May 2, 2021, 8:30 a.m.11:10 a.m.
Special Session on Nonlinear PDEs and fluid dynamics, III
Special Session 13, American Mathematical Society
Organizers:
Igor Kukavica, University of Southern California kukavica@usc.edu
Juhi Jang, University of Southern California
Wojciech Ozanski, University of Southern California

8:30 a.m.
Instability of finite time blowups for incompressible Euler.
Laurent Lafleche, The university of Texas at Austin
Alexis F Vasseur*, The University of Texas at Austin
Misha Vishik, The University of Texas at Austin
(11673544) 
9:00 a.m.
Vanishing viscosity limit for the vortexwave system.
Trinh Nguyen*, University of Southern California
Toan Nguyen, Pennsylvania State University
(116735275) 
9:30 a.m.
Small scale formations in the incompressible porous media equation.
Alexander Kiselev, Duke University
Yao Yao*, Georgia Institute of Technology
(116735107) 
10:00 a.m.
New Estimates on the second derivatives of the 3D NavierStokes equation.
Alexis F. Vasseur, The University of Texas at Austin
Jincheng Yang*, The University of Texas at Austin
(1167352) 
10:30 a.m.
The finite speed of propagation in degenerate Einstein Brownian Motion model.
Isanka Garli Hevage*, Texas Tech University
Akif Ibraguimov, Texas Tech University
(116735187)

8:30 a.m.

Sunday May 2, 2021, 8:30 a.m.12:00 p.m.
Special Session on Regularity Theory for Linear and Nonlinear PDEs, III
Special Session 11, American Mathematical Society
Organizers:
Zongyuan Li, Rutgers University zongyuan.li@rutgers.edu
Weinan Wang, University of Arizona
Xueying Yu, Massachusetts Institute of Technology

8:30 a.m.
Hilbertian approximations of monotone operators.
Krutika Tawri, Indiana University,, Bloomington
Roger M Temam*, Indiana University, Bloomington
(11673555) 
9:00 a.m.
On the NernstPlanckNavierStokes Equations.
M. Ignatova*, Temple University
(11673534) 
9:30 a.m.
Informal Discussion. 
10:00 a.m.
Global wellposedness of strong solutions of Doi model with large viscous stress.
Joonhyun La*, Stanford University
(11673536) 
10:30 a.m.
Topological phase transition and solar surface eruptions and sunspots.
Tian Ma, Sichuan University
Shouhong Wang*, Indiana U
(11678237) 
11:00 a.m.
Global existence of weak solutions to the 3D incompressible NavierStokes equations for intermittent initial data in halfspace.
Zachary Bradshaw, University of Arkansas
Igor Kukavica, University of Southern California
Wojciech S Ożański*, University of Southern California
(116776335) 
11:30 a.m.
Informal Discussion.

8:30 a.m.

Sunday May 2, 2021, 8:30 a.m.11:55 a.m.
Special Session on Social Change through Mathematics and Education, I
Special Session 18, American Mathematical Society
Organizers:
Federico Ardila, San Francisco State University
Shandy Hauk, San Francisco State University hauk@sfsu.edu
Ashia Wilson, Massachusetts Institute of Technology
Robin Wilson, California State Polytechnic University, Pomona

8:00 a.m.
Context and contingency: History of Mathematics and Social Change in Mathematics and Education.
Michael J Barany*, University of Edinburgh
(116701237) 
8:45 a.m.
From the abstract to the personal: Who you must become to do equity work.
Aris B Winger*, Georgia Gwinnett College
(116797315) 
9:30 a.m.
Break. 
10:30 a.m.
A panel discussion on social change through mathematics education.
Jayadev Siddhanta Athreya*, University of Washington
Christopher Jett, University of West Georgia
Gregory Larnell, University of Illinois, Chicago
Belin Tsinnajinnie, Santa Fe Community College
Luz ValoyesChávez, Universidad de Chile
(116700183)

8:00 a.m.

Sunday May 2, 2021, 8:30 a.m.11:50 a.m.
Special Session on Topological Perspectives in Graph Theory, Classical and Recent, III
Special Session 3, American Mathematical Society
Organizers:
Jonathan L. Gross, Columbia University gross@cs.columbia.edu
Timothy Sun, San Francisco State University
Thomas W. Tucker, Colgate University

8:30 a.m.
Character tables of twisted linear fractional groups and enumeration of regular maps.
Sona Pavlikova, Slovak University of Technology, Bratislava, Slovakia
Jozef Siran*, Open University and Slovak University of Technology
(116720164) 
9:00 a.m.
Edgeouter embeddability: conditions and constructions.
Joanna A. EllisMonaghan*, KdVI, University of Amsterdam
Mark N. Ellingham, Vanderbilt University
(116705143) 
9:30 a.m.
Klein, dessins d'enfants and projective primes.
Gareth A. Jones*, University of Southampton
Alexander K. Zvonkin, LaBRI, Université de Bordeaux
(11670571) 
10:00 a.m.
Break. 
10:30 a.m.
Partial duality of hypermaps.
Sergei Chmutov*, The Ohio State University, Mansfield
(11670531) 
11:00 a.m.
Partial duality for ribbon graphs, III: A Gray code algorithm for enumeration.
Jonathan L. Gross, Columbia University
Toufik Mansour*, University of Haifa
Thomas W. Tucker, Colgate University
(116705144) 
11:30 a.m.
Infinite families of infinite vertextransitive, nonCayley graphs.
Mark E. Watkins*, Syracuse University
(116705113)

8:30 a.m.

Sunday May 2, 2021, 2:00 p.m.6:00 p.m.
Special Session on Algebraic Ktheory, Mathematical Physics, and Perfectoid Spaces, IV
Special Session 12, American Mathematical Society
Organizers:
Shanna Dobson, California State University, Los Angeles Shanna.Dobson@calstatela.edu
Michael Maroun,

2:00 p.m.
On the smoothness of weak solutions of an abstract evolution equation with a scalar type spectral operator on the real axis.
Marat V. Markin*, California State University, Fresno
(116747312) 
3:00 p.m.
Evaluating spectral statistics of quantum graphs without the semiclassical limit.
Tori Hudgins*, University of Dallas
Jon Harrison, Baylor University
(116781108) 
3:30 p.m.
Break. 
4:00 p.m.
Discussion led by Shanna Dobson and Michael Maroun. 
5:00 p.m.
Discussion.

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.5:20 p.m.
Special Session on Categorical and Combinatorial Methods in Representation Theory, and Related Topics, IV
Special Session 19, American Mathematical Society
Organizers:
Mee Seong Im, U.S. Naval Academy
Bach Nguyen, Xavier University of Louisiana bnguy38math@gmail.com
Arik Wilbert, University of Georgia

2:00 p.m.
Kostant's problem and categorical actions of the Hecke category.
Hankyung Ko*, Uppsala University
(11671730) 
2:30 p.m.
New decomposition numbers of finite classical groups via categorification.
Olivier Dudas, University of Paris
Emily Norton*, University of Clermont Auvergne
(116720290) 
3:00 p.m.
The diagonal reduction algebra of $\frak{osp}(12)$.
Dwight Anderson Williams II*, Iowa State University
Jonas T. Hartwig, Iowa State University
(116716282) 
3:30 p.m.
Break. 
4:00 p.m.
Homological mirror symmetry for the universal centralizers.
Xin Jin*, Boston College
(11672248) 
4:30 p.m.
Representations of (degenerate) affine Hecke algebra of type $C_n$ and combinatorics.
Yue Zhao*, University of California, Davis
(11670597) 
5:00 p.m.
On KazhdanLusztig cells of $\mathbf{a}$value 2.
Tianyuan Xu*, University of Colorado Boulder
R. M. Green, University of Colorado Boulder
(116705157)

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.6:30 p.m.
Special Session on Commutative Algebra, IV
Special Session 21, American Mathematical Society
Organizers:
Juliette Bruce, Mathematical Sciences Research Institute, Berkley
Monica Lewis, University of Michigan
Sean SatherWagstaff, Clemson ssather@clemson.edu

2:00 p.m.
A hypergraph characterization of nearly complete intersections.
Courtney R Gibbons*, Clinton
Chiara Bondi, Hamilton College
Yuye Ke, The Ohio State University
Spencer Martin, University of Virginia
Shrunal Pothagoni, George Mason University
Andrew Stelzer, Lawrence University
(116713156) 
2:30 p.m.
MultiRees algebras of strongly stable ideals.
Gabriel Enrique Sosa Castillo*, Colgate University
KueiNuan Lin, PennState University, Greater Allegheny Campus
Sevi Kara, University of South Alabama
(116713295) 
3:00 p.m.
Geometric vertex decomposition and liaison.
Patricia Klein*, University of Minnesota
Jenna Rajchgot, McMaster University
(116713176) 
4:00 p.m.
Symbolic powers of cover ideals of graphs and Koszul property.
Yan Gu, Soochow University
Tài Huy Hà, Tulane University
Joseph Skelton*, Tulane University
(116713331) 
4:30 p.m.
Characteristic dependence of syzygies of random monomial ideals.
Caitlyn W Booms*, University of WisconsinMadison
Daniel Erman, University of WisconsinMadison
Jay Yang, University of MinnesotaTwin Cities
(11671381) 
5:00 p.m.
Monomial Ideals and Koszul Quotients of Exterior Algebras.
Jason McCullough*, Iowa State University
Zachary Mere, Iowa State University
(11671854) 
5:30 p.m.
Discussion.

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.3:30 p.m.
Special Session on Differential Geometry and Geometric PDE, IV
Special Session 1, American Mathematical Society
Organizers:
Alfonso Agnew, California State University, Fullerton
Nicholas Brubaker, California State University, Fullerton
Thomas Murphy, California State University, Fullerton tmurphy@fullerton.edu
Shoo Seto, California State University, Fullerton
Bogdan Suceavă, California State University, Fullerton

2:00 p.m.
Finite ball quotients and algebraicity of the Bergman kernel.
Peter Ebenfelt, University of California, San Diego
Ming Xiao, University of California, San Diego
Hang Xu*, University of California, San Diego
(116732199) 
3:00 p.m.
Translation surfaces and separable surfaces with constant curvature.
Rafael Lopez*, University of Granada
(11675320)

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.6:00 p.m.
Special Session on Localization and delocalization in ergodic quantum systems, IV
Special Session 2, American Mathematical Society
Organizers:
Ilya Kachkovskiy, Michigan State University ikachkov@msu.edu
Wencai Liu, Texas A&M University
Rodrigo Matos, Texas A&M University

2:00 p.m.
Spectral theory of Schroedinger operators over circle maps.
Sasa Kocic*, University of Mississippi
(116781323) 
2:30 p.m.
Spectral and dynamical properties of aperiodic quantum walks.
David Damanik, Rice University
Jake Fillman*, Texas State University
Darren C Ong, Xiamen University Malaysia
Zhenghe Zhang, University of California, Riverside
(116747120) 
3:00 p.m.
Positivity of the Lyapunov exponent for potentials generated by hyperbolic transformations.
Artur Avila, University of Zurich and IMPA
David Damanik, Rice University
Zhenghe Zhang*, UC Riverside
(116737224) 
3:30 p.m.
Break. 
4:00 p.m.
Agmontype decay of eigenfunctions for a class of Schrödinger operators with noncompact classically allowed region.
Christoph A Marx*, Oberlin College
Hengrui Zhu, Oberlin College
(11678141) 
4:30 p.m.
The exponential decay of eigenfunctions for tight binding Hamiltonians via landscape and dual landscape functions.
Wei Wang, School of Mathematics, University of Minnesota
Shiwen Zhang*, School of Mathematics, University of Minnesota
(116747215) 
5:00 p.m.
Exponential decay of fundamental solutions to Schrödinger operators and the landscape function.
Svitlana Mayboroda, University of Minnesota
Bruno Giuseppe Poggi Cevallos*, University of Minnesota
(116735205) 
5:30 p.m.
Discussion.

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.5:00 p.m.
Special Session on Quivers, Tensors, and Their Applications, IV
Special Session 20, American Mathematical Society
Organizers:
Visu Makam, Institute for Advanced Study
Francesca Gandini, Kalamazoo College francesca.gandini@kzoo.edu
Alana Huszar, University of Michigan
Robert Cochrane, University of Michigan

2:00 p.m.
Simultaneous robust subspace recovery and semistability of quiver representations.
Calin Chindris, University of MissouriColumbia
Daniel Kline*, College of the Ozarks
(116716213) 
2:30 p.m.
Generalized LittlewoodRichardson coefficients for branching rules of classical groups.
Brett Collins*, Bucknell University
(116716214) 
3:00 p.m.
A quiver invariant theoretic approach to radial isotropy and Paulsen's Problem for matrix frames.
Calin I Chindris*, University of MissouriColumbia
(11671535) 
3:30 p.m.
Break. 
4:00 p.m.
Discussion.

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.5:25 p.m.
Special Session on Social Change through Mathematics and Education, II
Special Session 18, American Mathematical Society
Organizers:
Federico Ardila, San Francisco State University
Shandy Hauk, San Francisco State University hauk@sfsu.edu
Ashia Wilson, Massachusetts Institute of Technology
Robin Wilson, California State Polytechnic University, Pomona

2:00 p.m.
The effect of differential victim crime reporting on predictive policing systems.
NilJana Akpinar*, Carnegie Mellon University
Maria DeArteaga, University of Texas at Austin
Alexandra Chouldechova, Carnegie Mellon University
(116700134) 
2:45 p.m.
Race, death, and justice: Capital sentencing in Washington State, 19812014.
Heather D. Evans*, Dept of Sociology, University of Washington
Katherine Beckett, Law, Societies & Justice Dept, University of Washington
(116797309) 
3:30 p.m.
Break. 
4:00 p.m.
Enumerating racial and gender disparities in eviction.
Timothy Thomas*, University of California, Berkeley
Ott Toomet, University of Washington
Alex Ramiller, University of California, Berkeley
Lucero Mejia, University of Washington
Jose Hernandez, University of Washington
(116700332) 
4:45 p.m.
Market design for social good: Using math, algorithms and economics to address social problems.
Irene Y Lo*, Stanford University
(116791305)

2:00 p.m.

Sunday May 2, 2021, 2:00 p.m.5:30 p.m.
Special Session on Topological Perspectives in Graph Theory, Classical and Recent, IV
Special Session 3, American Mathematical Society
Organizers:
Jonathan L. Gross, Columbia University gross@cs.columbia.edu
Timothy Sun, San Francisco State University
Thomas W. Tucker, Colgate University

2:00 p.m.
Directed and directable embeddings.
Blake Dunshee, Belmont University
Mark Ellingham*, Vanderbilt University
Joanna A. EllisMonaghan, University of Amsterdam, Netherlands
(11670525) 
2:30 p.m.
The Wiener ratio for embedded graphs  density and voltages.
Lowell Abrams*, George Washington University
LindseyKay Lauderdale, Towson University
(11670598) 
3:00 p.m.
Break. 
4:00 p.m.
Partialdual genus polynomials and signed intersection graphs.
Qi Yan*, China University of Mining and Technology
(11672033) 
4:30 p.m.
On checkerboard colorable twisted duals and regular checkerboard colorable twisted duals.
X. Jin*, Xiamen University
Q. Yan, China University of Mining and Technology
X. Guo, Xiamen University
(116705162) 
5:00 p.m.
Limits for embedding distributions.
Yichao Chen*, SuZhou University of Science and Technology
Xuhui Peng, Hunan Normal University
Jinliang Zhang, Hunan University
(11670524)

2:00 p.m.
Inquiries: meet@ams.org