AMS Sectional Meeting Program by Day

Current as of Sunday, May 3, 2009 00:21:11

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Program  |  Deadlines  |  Registration/Housing/Etc.  |  Inquiries:  meet@ams.org

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2009 Spring Western Section Meeting
San Francisco, CA, April 25-26, 2009 (Saturday - Sunday)
Meeting #1049

Associate secretaries:
Michel L Lapidus, AMS lapidus@math.ucr.edu, lapidus@mathserv.ucr.edu

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Saturday April 25, 2009

• Saturday April 25, 2009, 7:30 a.m.-4:00 p.m.
  Meeting Registration
  Third Floor Lobby, Thornton Hall
• Saturday April 25, 2009, 7:30 a.m.-4:00 p.m.
  Exhibit and Book Sale
  Room 429, Thornton Hall
• Saturday April 25, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Nonlinear Partial Differential Equations, I
  Room 432, Thornton Hall
  Organizers:
  Igor Kukavica, University of Southern California kukavica@usc.edu
  Amjad Tuffaha, University of Southern California tuffaha@usc.edu
  Mohammed Ziane, University of Southern California ziane@usc.edu
  

  • 8:00 a.m.
    Well-posedness and long time behavior of weak solutions to Boussinesq-Kirchoff equations.
    Irena M Lasiecka*, University of Virginia
    (1049-35-138)
  • 8:30 a.m.
    Filtering, smoothing, and quasi-reversibility, and their relationship to the estimation and forecasting problems in chaotic PDE systems with diffusion.
    Thomas R Bewley*, UC San Diego
    (1049-35-17)
  • 9:00 a.m.
    Global regularity for the 2D MHD equations with mixed partial dissipation and magnetic diffusion.
    Jiahong Wu*, Oklahoma State University
    (1049-35-42)
  • 9:30 a.m.
    A degenerate hyperbolic free-boundary problem for 3D compressible Euler flow in physical vacuum and the method of artificial phase.
    Steve Shkoller*, UC Davis
    (1049-35-154)
  • 10:00 a.m.
    Free boundary problems of the Euler equation: local well-posedness and hydrodynamical instabilities.
    Jalal Shatah, New York University
    Chongchun Zeng*, Georgia Institute of Technology
    (1049-35-157)
  • 10:30 a.m.
    Local Bifurcations in Random Dynamical Systems.
    Mickaël David Chekroun*, Ecole Normale Supérieure
    (1049-35-193)
• Saturday April 25, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Banach Algebras, Topological Algebras, and Abstract Harmonic Analysis, I
  Room 425, Thornton Hall
  Organizers:
  Thomas V. Tonev, University of Montana-Missoula tonevtv@mso.umt.edu
  Fereidoun Ghahramani, University of Manitoba fereidou@cc.umanitoba.ca
  

  • 8:00 a.m.
    A Cauchy-Riemann equation for generalized analytic functions.
    John Wermer*, Brown University
    (1049-32-43)
  • 8:30 a.m.
    Function Algebras Invariant under Group Actions.
    Alexander J. Izzo*, Bowling Green State University
    (1049-32-31)
  • 9:00 a.m.
    Peak point theorems.
    John T Anderson*, College of the Holy Cross
    (1049-46-184)
  • 9:30 a.m.
    On Farhadi--Ghahramani's multiplier problem.
    Matthias L Neufang*, Carleton University
    (1049-43-168)
  • 10:00 a.m.
    A comparison of some Arens irregularities.
    Zhiguo Hu*, University of Windsor
    Matthias Neufang, Carleton University
    (1049-43-160)
  • 10:30 a.m.
    Gelfand duality for pro-$C^*$-algebras and non-commutative $k$-spaces.
    Gabor Lukacs*, University of Manitoba
    Rachid El Harti, University Hassan I, FST de Settat
    (1049-46-134)
• Saturday April 25, 2009, 8:00 a.m.-10:40 a.m.
  Special Session on Concentration Inequalities, I
  Room 335, Thornton Hall
  Organizers:
  Sourav Chatterjee, University of California Berkeley sourav@stat.berkeley.edu
  Roman Vershynin, University of California Davis vershynin@math.ucdavis.edu
  

  • 8:00 a.m.
    Stein's Method for concentration inequalities - some applications.
    Sourav Chatterjee, UC Berkeley
    Partha S Dey*, UC Berkeley
    (1049-60-176)
  • 9:00 a.m.
    Hensley's theorem and isotropic positions of convex measures.
    Sergey G Bobkov*, University of Minnesota
    (1049-46-149)
  • 10:00 a.m.
    Random Tensors and Planted Cliques.
    Charlie Brubaker, Georgia Tech
    Santosh S Vempala*, Georgia Tech
    (1049-60-169)
• Saturday April 25, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Geometry and Topology of Orbifolds, I
  Room 210, Thornton Hall
  Organizers:
  Elizabeth Stanhope, Lewis & Clark University stanhope@lclark.edu
  Joseph E. Borzellino, California State University San Luis Obispo jborzell@calpoly.edu
  

  • 8:00 a.m.
    Applications of heat invariants to 2-orbifolds.
    Sarah J Greenwald*, Appalachian State University
    Emily Dryden, Bucknell University
    Carolyn Gordon, Dartmouth College
    David Webb, Dartmouth College
    (1049-53-178)
  • 8:30 a.m.
    Geodesics on weighted projective spaces.
    Victor Guillemin, MIT
    Alejandro Uribe, University of Michgan
    Zuoqin Wang*, Johns Hopkins University
    (1049-58-135)
  • 9:00 a.m.
    Bounds on 2-orbifold diffeomorphism type.
    Emily B. Proctor*, Middlebury College
    Elizabeth A. Stanhope, Lewis & Clark College
    (1049-53-103)
  • 9:30 a.m.
    Cohomogeneity 3 Actions on the Sphere.
    J. McGowan*, Howard University
    C. Searle, Instituto de Matematicas Unidad Cuernavaca-UNAM
    (1049-53-97)
  • 10:00 a.m.
    Non-negatively curved manifolds with maximal symmetry rank in low dimensions.
    Catherine E Searle*, IMATE-UNAM Cuernavaca
    Fernando Galaz-Garcia, U Maryland College Park
    (1049-53-158)
  • 10:30 a.m.
    Connections between singular spaces: leaf spaces of Riemannian manifolds and orbifolds.
    Mary R Sandoval*, Trinity College
    (1049-58-105)
• Saturday April 25, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Matroids in Algebra and Geometry, I
  Room 113, Hensill Hall
  Organizers:
  Federico Ardila, San Francisco State University federico@math.sfsu.edu
  Lauren Williams, Harvard University lauren@math.harvard.edu
  

  • 8:00 a.m.
    How to draw a tropical plane.
    Sven Hermann, Technical University Darmstadt, Germany
    Anders Jensen, University of Gottingen, Germany
    Michael Joswig, Technical University Darmstadt, Germany
    Bernd Sturmfels*, University of California at Berkeley
    (1049-05-18)
  • 9:00 a.m.
    Cellular resolutions of monomial ideals from coarse tropical type decompositions.
    Anton Dochtermann*, TU Berlin
    Michael Joswig, TU Darmstadt
    Raman Sanyal, UC Berkeley
    (1049-05-179)
  • 10:00 a.m.
    Valuations for matroid polytope subdivisions.
    Federico Ardila, San Francisco State University
    Alex Fink, University of California, Berkeley
    Felipe Rincon*, University of California, Berkeley
    (1049-05-112)
  • 10:30 a.m.
    Universality for valuations of matroid polytope subdivisions.
    Alex R Fink*, UC Berkeley
    (1049-05-116)
• Saturday April 25, 2009, 8:00 a.m.-10:40 a.m.
  Special Session on Aspects of Differential Geometry, I
  Room 325, Thornton Hall
  Organizers:
  David Bao, San Francisco State University bao@math.sfsu.edu
  Lei Ni, University of California San Diego lni.math.ucsd@gmail.com
  

  • 8:00 a.m.
    Weighted Poincare inequality and Ricci curvature lower bound.
    Jiaping Wang*, School of mathematics; University of Minnesota
    Peter Li, University of Califronia, Irvine
    (1049-58-30)
  • 9:00 a.m.
    Geometric applications of monotone entropy quantities for parabolic PDE.
    Brett L Kotschwar*, Massachusetts Institute of Technology
    (1049-53-65)
  • 10:00 a.m.
    Exceptional compact simply connected spaces with positive pinching.
    Nolan R Wallach*, University of California, San Diego
    (1049-53-60)
• Saturday April 25, 2009, 8:30 a.m.-10:50 a.m.
  Special Session on Applications of Knot Theory to the Entanglement of Biopolymers, I
  Room 210, Science Building
  Organizers:
  Javier Arsuaga, San Francisco State University jarsuaga@sfsu.edu
  Kenneth Millett, University of California Santa Barbara millett@math.ucsb.edu
  Mariel Vazquez, San Francisco State University mariel@math.sfsu.edu
  

  • 8:30 a.m.
    Knot Theoretic Analysis of Difference Topology Experiments on a Protein-DNA complex.
    Isabel Darcy, University of Iowa
    John Luecke*, University of Texas at Austin
    Mariel Vazquez, San Francisco State University
    (1049-57-85)
  • 9:30 a.m.
    Analyzing DNA Transposition and Recombination by Difference Topology.
    Makkuni Jayaram*, University of Texas at Austin
    (1049-03-41)
  • 10:00 a.m.
    Tangle analysis of protein-DNA complexes.
    Isabel K. Darcy*, University of Iowa
    (1049-57-53)
  • 10:30 a.m.
    New Mechanistic Insights into Flp and Cre Recombination from DNA Loop-closure Kinetics.
    Stephen D Levene*, University of Texas at Dallas
    (1049-92-150)
• Saturday April 25, 2009, 8:30 a.m.-10:50 a.m.
  Special Session on Algebra and Number Theory with Polyhedra, I
  Room 108, Hensill Hall
  Organizers:
  Matthias Beck, San Francisco State University beck@math.sfsu.edu
  Christian Haase, Freie Universität Berlin Christian.Haase@math.fu-berlin.de
  

  • 8:30 a.m.
    Volumes of matroid polytopes.
    Federico Ardila, SFSU
    Carolina Benedetti, Universidad de los Andes
    Jeffrey Doker*, UC Berkeley
    (1049-05-90)
  • 9:00 a.m.
    Bounds on lattice polygons and the classification of toric log Del Pezzo surfaces.
    Alexander M. Kasprzyk, IMSAS, University of Kent
    Maximilian Kreuzer, Institute for Theoretical Physics, Vienna University of Technology
    Benjamin Nill*, Institute of Mathematics, Freie Universitaet Berlin
    (1049-52-143)
  • 9:30 a.m.
    Lattice Polytopes in polymake.
    Michael Joswig, TU Darmstadt
    Benjamin Mueller, FU Berlin
    Andreas Paffenholz*, FU Berlin
    (1049-05-145)
  • 10:00 a.m.
    b-transshipments, modular flow reciprocity, and a combinatorial interpretation of the Tutte polynomial.
    Raman Sanyal*, University of California, Berkeley
    (1049-05-211)
  • 10:30 a.m.
    The balanced minimum evolution polytopes.
    Ruriko Yoshida*, University of Kentucky
    (1049-05-79)
• Saturday April 25, 2009, 9:00 a.m.-10:40 a.m.
  Special Session on Lie group actions, Teichmüller Flows and Number Theory, I
  Room 329, Thornton Hall
  Organizers:
  Jayadev Athreya, Yale University jayadev.athreya@yale.edu
  Yitwah Cheung, San Francisco State University cheung@math.sfsu.edu
  Anton Zorich, Rennes University Anton.Zorich@univ-rennes1.fr
  

  • 9:00 a.m.
    Billiards in rectangles with slits.
    Howard Masur*, University of Chicago
    Yitwah Cheung, San Francisco State University
    Pascal Hubert, Marseilles University
    (1049-37-119)
  • 10:00 a.m.
    On the minimum dilatation of pseudo-Anosov diffeomorphisms on surfaces of small genera.
    Erwan Lanneau*, Centre de Physique Theorique, Marseille, France
    (1049-37-144)
• Saturday April 25, 2009, 9:00 a.m.-10:50 a.m.
  Special Session on Recent Progress in Geometric Group Theory, I
  Room 327, Thornton Hall
  Organizers:
  Seonhee Lim, Cornell University slim@math.cornell.edu)
  Anne Thomas, Cornell University athomas@math.cornell.edu
  

  • 9:00 a.m.
    Twisting out fully irreducible automorphisms.
    Alexandra R Pettet*, University of Michigan
    Matt Clay, University of Oklahoma
    (1049-20-181)
  • 9:30 a.m.
    Linear Bound for the Length of a Conjugating Element in the Mapping Class Group.
    Jing Tao*, University of Illinois at Chicago
    (1049-51-94)
  • 10:00 a.m.
    Symplectic structures on right-angled Artin groups: between the mapping class group and the symplectic group.
    Matthew B Day*, California Institute of Technology
    (1049-20-91)
  • 10:30 a.m.
    Surface Subgroups of Graph Products of Groups.
    Sang-hyun Kim*, the University of Texas at Austin
    (1049-20-107)
• Saturday April 25, 2009, 9:00 a.m.-10:50 a.m.
  Special Session on Nonlinear Dispersive Equations, I
  Room 409, Thornton Hall
  Organizers:
  Sebastian Herr, University of California Berkeley herr@math.berkeley.edu
  Jeremy L. Marzuola, Columbia University jm3058@columbia.edu
  

  • 9:00 a.m.
    Blow up phenomena in energy critical dispersive equations.
    Daniel Tataru*, University of California, Berkeley
    (1049-35-109)
  • 10:00 a.m.
    Remarks on global a priori estimates for the nonlinear Schroedinger equation.
    Nikolaos Tzirakis*, University of Illinois
    (1049-35-36)
  • 10:30 a.m.
    On the Cauchy problem for focusing and defocusing Gross-Pitaevskii hierarchies.
    Thomas Chen, University of Texas at Austin
    Natasa Pavlovic*, University of Texas at Austin
    (1049-35-27)
• Saturday April 25, 2009, 9:30 a.m.-10:50 a.m.
  Special Session on Advances in the Theory of Integer Linear Optimization and its Extensions, I
  Room 206, Hensill Hall
  Organizers:
  Matthias Koeppe, University of California Davis mkoeppe@math.ucdavis.edu
  Peter Malkin, University of California Davis malkin@math.ucdavis.edu
  

  • 9:30 a.m.
    Basis reduction, and the complexity of branch-and-bound.
    Gabor Pataki*, Dept of Statistics and Operations Research, UNC Chapel Hill
    Mustafa Tural, Dept of Statistics and Operations Research, UNC Chapel Hill
    (1049-90-28)
  • 10:00 a.m.
    Lattice-based Approaches to Number Partitioning in the Hard Phase.
    Bala Krishnamoorthy*, Washington State University
    William Webb, Washington State University
    Nathan Moyer, Washington State University
    (1049-90-68)
  • 10:30 a.m.
    Facets of the Mixed Integer Cut.
    Ellis L. Johnson*, Georgia Tech
    (1049-90-101)
• Saturday April 25, 2009, 11:10 a.m.-12:00 p.m.
  Invited Address
  Asymptotic properties of finite groups and finite-dimensional algebras.
  Room 201, Science Building
  Efim Zelmanov*, University of California San Diego
  (1049-17-04)
• Saturday April 25, 2009, 2:00 p.m.-2:50 p.m.
  Invited Address
  Concentration of measure, convex geometry and random matrices.
  Room 201, Science Building
  Roman Vershynin*, University of Michigan
  (1049-60-02)
• Saturday April 25, 2009, 3:00 p.m.-5:20 p.m.
  Special Session on Applications of Knot Theory to the Entanglement of Biopolymers, II
  Room 210, Science Building
  Organizers:
  Javier Arsuaga, San Francisco State University jarsuaga@sfsu.edu
  Kenneth Millett, University of California Santa Barbara millett@math.ucsb.edu
  Mariel Vazquez, San Francisco State University mariel@math.sfsu.edu
  

  • 3:00 p.m.
    Discussion
  • 4:00 p.m.
    Size and Shape of Knotted Polymers.
    Eric J Rawdon*, University of St. Thomas
    (1049-57-52)
  • 4:30 p.m.
    Knots, Ephmeral Knots and Slipknots in Random Walks and Equilateral Polygons.
    Kenneth C Millett*, University of California, Santa Barbara
    (1049-57-62)
  • 5:00 p.m.
    The Writhe of Oriented Polygonal Graphs.
    Christian Laing, New York University
    De Witt Sumners*, Florida State University
    (1049-57-121)
• Saturday April 25, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Algebra and Number Theory with Polyhedra, II
  Room 108, Hensill Hall
  Organizers:
  Matthias Beck, San Francisco State University beck@math.sfsu.edu
  Christian Haase, Freie Universität Berlin Christian.Haase@math.fu-berlin.de
  

  • 3:00 p.m.
    Average Behavior of the Frobenius Numbers.
    Iskander Aliev, Cardiff University
    Martin Henk*, Universitaet Magdeburg
    (1049-52-84)
  • 3:30 p.m.
    Tiling lattices with translates of sublattices.
    Sinai Robins*, Nanyang Technological University
    James Propp, University of Massachussetts, Lowell
    (1049-52-152)
  • 4:00 p.m.
    Growth series of cyclotomic and root lattices.
    Serkan Hosten*, San Francisco State University Mathematics Department
    (1049-05-190)
  • 4:30 p.m.
    A Finite Calculus Approach to Ehrhart Polynomials.
    Kevin Woods*, Oberlin College
    (1049-05-188)
  • 5:00 p.m.
    Weighted Ehrhart Theory.
    Alan Michael Stapledon*, University of Michigan
    (1049-05-35)
  • 5:30 p.m.
    Nowhere harmonic colorings of graphs.
    Benjamin J Braun*, University of Kentucky
    Matthias Beck, San Francisco State University
    (1049-05-113)
• Saturday April 25, 2009, 3:00 p.m.-4:40 p.m.
  Special Session on Lie group actions, Teichmüller Flows and Number Theory, II
  Room 329, Thornton Hall
  Organizers:
  Jayadev Athreya, Yale University jayadev.athreya@yale.edu
  Yitwah Cheung, San Francisco State University cheung@math.sfsu.edu
  Anton Zorich, Rennes University Anton.Zorich@univ-rennes1.fr
  

  • 3:00 p.m.
    Computing L-functions with homogeneous dynamics.
    Akshay Venkatesh*, Stanford University
    (1049-11-118)
  • 4:00 p.m.
    Dynamical properties of automorphisms of Cartan geometries.
    Charles Frances*, Université Paris-Sud, Orsay
    (1049-53-140)
• Saturday April 25, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Nonlinear Partial Differential Equations, II
  Room 432, Thornton Hall
  Organizers:
  Igor Kukavica, University of Southern California kukavica@usc.edu
  Amjad Tuffaha, University of Southern California tuffaha@usc.edu
  Mohammed Ziane, University of Southern California ziane@usc.edu
  

  • 3:00 p.m.
    Semigroup-wellposedness, strong and uniform stability of a hyperbolic-parabolic Stokes-Lame fluid-structure interaction model.
    Roberto Triggiani*, Mathematics Department, U of Virginia
    (1049-35-191)
  • 3:30 p.m.
    The quintic NLS as the mean field limit of a Boson gas with three-body interactions.
    Thomas Chen, University of Texas at Austin
    Natasa Pavlovic*, University of Texas at Austin
    (1049-35-25)
  • 4:00 p.m.
    Commuting conditional expectations and nonlinear evolution.
    Alexandre J. Chorin*, University of California, Berkeley.
    (1049-35-61)
  • 4:30 p.m.
    Vanishing viscosity and the accumulation of vorticity on the boundary.
    James P Kelliher*, University of Caifornia, Riverside
    (1049-76-161)
  • 5:00 p.m.
    AeroElastic Stability in Viscous Flow.
    A. V, Balakrishnan*, University of California Los Angeles-UCLA
    (1049-35-48)
  • 5:30 p.m.
    Discussion
• Saturday April 25, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Banach Algebras, Topological Algebras, and Abstract Harmonic Analysis, II
  Room 425, Thornton Hall
  Organizers:
  Thomas V. Tonev, University of Montana-Missoula tonevtv@mso.umt.edu
  Fereidoun Ghahramani, University of Manitoba fereidou@cc.umanitoba.ca
  

  • 3:00 p.m.
    Transformations on the space of positive operators.
    Lajos Molnar*, University of Debrecen
    (1049-46-86)
  • 3:30 p.m.
    Peripheral Multiplicativity and Isomorphisms Between Standard Operator Algebras.
    Thomas Tonev, University of Montana
    Aaron Luttman*, Clarkson University
    (1049-47-15)
  • 4:00 p.m.
    Norm--Linear and Norm--Additive Operators Between Uniform Algebras.
    Thomas Tonev, University of Montana
    Rebekah Yates*, University of Montana
    (1049-46-162)
  • 4:30 p.m.
    Biflatness and biprojectivity of the Fourier algebra.
    Volker Runde*, University of Alberta
    (1049-43-87)
  • 5:00 p.m.
    Approximate amenability of Beurling algebras.
    Yong Zhang*, Department of Mathematics, University of Manitoba
    (1049-46-117)
  • 5:30 p.m.
    Unitary representations and the Eberlein compactification of a locally compact group.
    Nico Spronk, University of Waterloo
    Ross Stokke*, University of Winnipeg
    (1049-43-132)
• Saturday April 25, 2009, 3:00 p.m.-5:20 p.m.
  Special Session on Recent Progress in Geometric Group Theory, II
  Room 327, Thornton Hall
  Organizers:
  Seonhee Lim, Cornell University slim@math.cornell.edu)
  Anne Thomas, Cornell University athomas@math.cornell.edu
  

  • 3:00 p.m.
    Rank 2 nondiscrete affine buildings.
    Arkady Berenstein, Department of Mathematics, University of Oregon
    Michael Kapovich*, Department of Mathematics, University of California, Davis
    (1049-51-98)
  • 4:00 p.m.
    Commensurability and unfoldings of uniform lattices in right-angled buildings.
    Angela Kubena Barnhill*, Northwestern University
    Anne Thomas, Cornell University
    (1049-20-207)
  • 4:30 p.m.
    The $\ell^2$-invariants of clean 2-complexes.
    Ethan Berkove, Lafayette College
    Sejal Dharia, San José State University
    Tim Hsu*, San José State University
    (1049-20-200)
  • 5:00 p.m.
    Unusual Geodesics in Generalizations of Thompson's Group.
    Claire Wladis*, BMCC/CUNY
    (1049-20-11)
• Saturday April 25, 2009, 3:00 p.m.-5:40 p.m.
  Special Session on Concentration Inequalities, II
  Room 335, Thornton Hall
  Organizers:
  Sourav Chatterjee, University of California Berkeley sourav@stat.berkeley.edu
  Roman Vershynin, University of California Davis vershynin@math.ucdavis.edu
  

  • 3:00 p.m.
    Concentration inequalities for eigenvalues of random matrices.
    Michel LEDOUX*, University of Toulouse
    (1049-60-37)
  • 4:00 p.m.
    On fine properties of mixtures with respect to concentration of measure and Sobolev type inequalities.
    Djalil Chafai*, Institut de Mathematiques de Toulouse and INRA, France
    Florent Malrieu, IRMAR, Universite de Rennes, France
    (1049-60-14)
  • 5:00 p.m.
    Concentration via coupling and some applications.
    Jean-René Chazottes*, CNRS-Ecole Polytechnique
    (1049-60-96)
• Saturday April 25, 2009, 3:00 p.m.-5:20 p.m.
  Special Session on Nonlinear Dispersive Equations, II
  Room 409, Thornton Hall
  Organizers:
  Sebastian Herr, University of California Berkeley herr@math.berkeley.edu
  Jeremy L. Marzuola, Columbia University jm3058@columbia.edu
  

  • 3:00 p.m.
    A system of ODEs for a Perturbation of a Minimal Mass Soliton.
    Jeremy Marzuola, Columbia University and Bonn University
    Sarah Raynor*, Wake Forest University
    Gideon Simpson, University of Toronto
    Catherine Sulem, University of Toronto
    (1049-35-16)
  • 3:30 p.m.
    Soliton evolution in the Hartree equation with slowly varying potential.
    Kiril Datchev*, University of California, Berkeley
    Ivan Ventura, University of California, Berkeley
    (1049-35-123)
  • 4:00 p.m.
    A Centre-Stable Manifold in $H^{1/2}$ for the $H^{1/2}$ Critical NLS.
    Marius Beceanu*, University of Chicago
    (1049-35-111)
  • 4:30 p.m.
    Stable Directions for Degenerate Excited States of Nonlinear Schrödinger Equations.
    Stephen Gustafson, University of British Columbia
    Tuoc Van Phan*, University of British Columbia
    (1049-35-174)
  • 5:00 p.m.
    Abstract Strichartz estimates and the Strauss conjecture for the wave equation in exterior domains.
    Jason Metcalfe*, University of North Carolina
    (1049-35-183)
• Saturday April 25, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Geometry and Topology of Orbifolds, II
  Room 210, Thornton Hall
  Organizers:
  Elizabeth Stanhope, Lewis & Clark University stanhope@lclark.edu
  Joseph E. Borzellino, California State University San Luis Obispo jborzell@calpoly.edu
  

  • 3:00 p.m.
    Generalized twisted sectors and applications.
    Carla Farsi, University of Colorado at Boulder
    Christopher Seaton*, Rhodes College
    (1049-53-74)
  • 3:30 p.m.
    Generating Functions for Orbifold Wreath Products.
    Carla Farsi*, University of Colorado
    Christopher Seaton, Rhodes College
    (1049-58-75)
  • 4:00 p.m.
    Lusternik-Schnirelmann category for orbifolds as Lie groupoids.
    Hellen Colman*, Wilbur Wright College
    (1049-55-78)
  • 4:30 p.m.
    The Stratified Structure of Spaces of Smooth Orbifold Mappings.
    Joseph E Borzellino, California State Polytechnic University, San Luis Obispo
    Victor W Brunsden*, Penn State Altoona
    (1049-57-67)
• Saturday April 25, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Advances in the Theory of Integer Linear Optimization and its Extensions, II
  Room 206, Hensill Hall
  Organizers:
  Matthias Koeppe, University of California Davis mkoeppe@math.ucdavis.edu
  Peter Malkin, University of California Davis malkin@math.ucdavis.edu
  

  • 3:00 p.m.
    Parametric Nonlinear Discrete Optimization.
    Jon Lee*, IBM TJ Watson Research Center
    (1049-90-24)
  • 3:30 p.m.
    SDP representation of convex sets.
    Jiawang Nie*, University of California, San Diego
    J. William Helton, University of California, San Diego
    (1049-90-115)
  • 4:00 p.m.
    A new SDP approach to the Max-Cut problem.
    Joao Gouveia*, University of Washington
    Monique Laurent, Centrum Wiskunde & Informatica (CWI)
    Pablo A Parrilo, Massachusetts Institute of Technology
    Rekha R Thomas, University of Washington
    (1049-90-38)
  • 4:30 p.m.
    Conic lifting.
    Alper Atamturk*, UC Berkeley
    Vishnu Narayanan, IIT Bombay
    (1049-90-32)
  • 5:00 p.m.
    Computing Infeasibility Certificates for Combinatorial Problems via Hilbert's Nullstellensatz.
    J.A. De Loera, University of California, Davis
    Jon Lee, IBM T.J. Watson Research Center, Yorktown Heights, NY
    Peter N. Malkin, University of California, Davis
    Susan Margulies*, Rice University
    (1049-05-185)
  • 5:30 p.m.
    Gauging feasibility of integer linear programs.
    Jesus A De Loera*, University of California, Davis
    (1049-90-203)
• Saturday April 25, 2009, 3:00 p.m.-5:40 p.m.
  Special Session on Matroids in Algebra and Geometry, II
  Room 113, Hensill Hall
  Organizers:
  Federico Ardila, San Francisco State University federico@math.sfsu.edu
  Lauren Williams, Harvard University lauren@math.harvard.edu
  

  • 3:00 p.m.
    Gale duality and Koszul duality.
    Tom Braden, University of Massachusetts
    Anthony Licata, Stanford University
    Nicholas Proudfoot*, University of Oregon
    Ben Webster, Massachusetts Institute of Technology
    (1049-16-71)
  • 4:00 p.m.
    Random Walks and Hyperplane Arrangements.
    Persi Diaconis*, Stanford University, Departments of Mathematics & Statistics
    (1049-05-29)
  • 5:00 p.m.
    Zonotopal combinatorics.
    Olga Holtz*, UC Berkeley and TU Berlin
    Amos Ron, UW Madison
    (1049-05-195)
• Saturday April 25, 2009, 3:00 p.m.-5:40 p.m.
  Special Session on Aspects of Differential Geometry, II
  Room 325, Thornton Hall
  Organizers:
  David Bao, San Francisco State University bao@math.sfsu.edu
  Lei Ni, University of California San Diego lni.math.ucsd@gmail.com
  

  • 3:00 p.m.
    The geometry of static and stationary spacetimes.
    Richard Schoen*, Stanford University
    (1049-53-54)
  • 4:00 p.m.
    Soliton equations and Gauss-Codazzi equations.
    Chuu-Lian Terng*, Department of Mathematics, University of California at Irvine
    (1049-53-72)
  • 5:00 p.m.
    Operator calculus and New geometric methods in analysis and topology.
    Jenny Harrison*, University of California, Berkeley
    (1049-53-58)
• Saturday April 25, 2009, 3:00 p.m.-5:55 p.m.
  Contributed Paper Session
  Room 428, Thornton Hall
  

  • 3:00 p.m.
    Stability of Nonlinear Differential Equations.
    rod freed*, California State University
    (1049-37-128)
  • 3:15 p.m.
    Cell Discovery in Networks with Transient Links.
    Thomas J Emerson*, Eigenvector Consulting
    (1049-68-204)
  • 3:30 p.m.
    A Discrete Pharmacokinetics Compartmental Model.
    Mostafa Ghandehari*, University of Texas at Arlington
    Shiva Keramati, none
    (1049-15-09)
  • 3:45 p.m.
    The Numerical Solution for the Exterior Dirichlet Problem for the Helmholtz Equation via the Jones integral equation approach specifically for the 'peanut' shape.
    Yajni M. Warnapala, Roger Williams University
    Elizabeth Morgan*, Roger Williams University
    (1049-45-104)
  • 4:00 p.m.
    The enveloping algebra of the Petrogradsky-Shestakov-Zelmanov algebra is not graded-nil in the critical characteristics.
    Ya. S. Krylyuk*, De Anza College
    (1049-17-47)
  • 4:15 p.m.
    Powered sums as linear combinations of binomial coefficients.
    Hung-ping Tsao*, Novato, California
    (1049-11-05)
  • 4:30 p.m.
    How to Differentiate an Integer Modulo n.
    Anthony Shaheen*, California State University Los Angeles
    Caleb Emmons, Pacific University
    Mike Krebs, California State University Los Angeles
    (1049-00-12)
  • 4:45 p.m.
    The Kauffman Polynomials of Pretzel Knots and Rational Knots.
    Jianyuan Kathy Zhong*, California State University Sacramento
    Bin Lu, California State University Sacramento
    (1049-57-153)
  • 5:00 p.m.
    A sufficient condition for intrinsic knotting of bipartite graphs.
    Sophy Huck, California State University, Chico
    Alexandra Appel, California State University, Chico
    Miguel-Angel Manrique, University of South California
    Thomas W Mattman*, Califorina State University, Chico
    (1049-57-63)
  • 5:15 p.m.
    Exponential Attractors for Reversible Cubic Autocatalytic Reaction-Diffusion Systems.
    Yuncheng You*, University of South Florida
    (1049-35-10)
  • 5:30 p.m.
    A-Harmonic Equations for Differential Forms.
    Shusen Ding*, Seattle University
    (1049-35-13)
  • 5:45 p.m.
    On the Leitmann equivalent problem approach.
    Florian Wagener*, Universiteit van Amsterdam, The Netherlands
    (1049-49-06)

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