
AMS Sectional Meeting Program by Special Session
Current as of Tuesday, April 12, 2005 15:09:47
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1998 Spring Southeastern Sectional Meeting
Louisville, KY, March 2021, 1998
Meeting #931
Associate secretaries: Robert J Daverman, AMS daverman@math.utk.edu
Special Session on Algebraic Combinatorics

Friday March 20, 1998, 8:00 a.m.10:50 a.m.
Special Session on Algebraic Combinatorics, I
Room 218A, Founder's Union Building Organizers: Anders Bjorner, Royal Institute of Technology bjorner@math.kth.se
Michelle L. Wachs, University of Miami wachs@math.miami.edu

8:00 a.m.
Counting faces of cubical spheres.
Eric K Babson*, Intitute for Advanced Study
(93105335)

8:30 a.m.
Fiber polytopes for the projections between cyclic polytopes.
Christos A Athanasiadis*, University of Pennsylvania
Jesu's A De Loera, The Geometry Center and University of Minnesota
Victor Reiner, University of Minnesota
Francisco Santos, University of Cantabria
(93105126)

9:00 a.m.
A type B associahedron.
Rodica Simion*, The George Washington University
(93105340)

9:30 a.m.
Weights on AlmostSimple Polytopes.
Susan Foege, University of Kentucky
Carl W. Lee*, University of Kentucky
(93152271)

10:00 a.m.
An Upper Bound Theorem for Rational Polytopes.
Margaret M Bayer*, University of Kansas
(93152297)

10:30 a.m.
Rational function identities for posets and integer polyhedra.
Curtis Greene*, Haverford College, Haverford PA
(93105350)

Friday March 20, 1998, 2:45 p.m.6:05 p.m.
Special Session on Algebraic Combinatorics, II
Room 218A, Founder's Union Building Organizers: Anders Bjorner, Royal Institute of Technology bjorner@math.kth.se
Michelle L. Wachs, University of Miami wachs@math.miami.edu

2:45 p.m.
Algebraic shifting increases relative homology.
Art Duval*, University of Texas at El Paso
(93105239)

3:15 p.m.
Group actions on posets.
Dmitry Kozlov*, MIT
(93105346)

3:45 p.m.
ELshellability of rankselected posets.
Larry Liu, Michigan State University
Bruce E Sagan*, Michigan State University
(93106311)

4:15 p.m.
Homology of monomial ideals and order dimension of lattices.
Irena Peeva, MIT
Vic Reiner, University of Minnesota
Volkmar Welker*, Universitaet Essen
(93105109)

4:45 p.m.
Combinatorial Laplacians of matroid complexes .
Woong Kook, Univ. of Minnesota
Victor Reiner*, Univ. of Minnesota
Dennis Stanton, Univ. of Minnesota
(9310533)

5:15 p.m.
A convolution formula for the Tutte polynomial.
Woong Kook, Univ. of Minnesota
Victor Reiner, Univ. of Minnesota
Dennis Stanton*, Univ. of Minnesota
(9310534)

5:45 p.m.
Flag Matroids.
Alexandre V. Borovik, UMIST
Israel M. Gelfand, Rutgers University
Neil L. White*, University of Florida
(9310550)

Saturday March 21, 1998, 8:00 a.m.10:50 a.m.
Special Session on Algebraic Combinatorics, III
Room 255, Burhans Hall Organizers: Anders Bjorner, Royal Institute of Technology bjorner@math.kth.se
Michelle L. Wachs, University of Miami wachs@math.miami.edu

8:00 a.m.
Partitions with block size bounded above, and partitions with one forbidden block size: Homotopy and Homology.
Sheila Sundaram*, Wesleyan University
(93105321)

8:30 a.m.
On the Smith Normal Form of the Varchenko matrices.
Phil Hanlon*, Univ. of Michigan
Graham Denham, Univ. of Michigan
(93105100)

9:00 a.m.
Combinatorics of the cyclic Lie character.
H\'el\`ene Barcelo*, ASU
Volkmar Welker, Universit\"at GHEssen
(93105332)

9:30 a.m.
Discrete Morse Theory for Graph Complexes.
John Shareshian*, California Institute of Technology
(93105185)

10:00 a.m.
Cohomology of Dowling Lattices and Lie Superalgebras.
Eric Gottlieb*, University of Miami
Michelle L Wachs, University of Miami
(93105282)

10:30 a.m.
Polynomial time algorithms to approximate permanents of nonnegative matrices .
Alexander Barvinok*, University of Michigan
(93105244)

Saturday March 21, 1998, 2:45 p.m.6:05 p.m.
Special Session on Algebraic Combinatorics, IV
Room 255, Burhans Hall Organizers: Anders Bjorner, Royal Institute of Technology bjorner@math.kth.se
Michelle L. Wachs, University of Miami wachs@math.miami.edu

2:45 p.m.
Mixed Bruhat operators.
Sergey Fomin*, M.I.T.
Francesco Brenti, University of Rome
(93105330)

3:15 p.m.
The partial order of dominant weights.
John R Stembridge*, University of Michigan, Ann Arbor, MI
(9310571)

3:45 p.m.
Pattern Avoidance and Rational Smoothness of Schubert Varieties.
Sara C. Billey*, MIT
(93105127)

4:15 p.m.
What does skewsymmetric functions, $F_w$ Stanley symmetric functions, skewSchubert functions all have in common?
Nantel Bergeron*, York University
Frank Sottile, University of Toronto
(93105116)

4:45 p.m.
A Recursion for Charge on Words.
Kendra Killpatrick, University of Minnesota
Dennis E White*, University of Minnesota
(9310551)

5:15 p.m.
Antiautomorphisms of subgroup lattices and involutions on tabloids.
Noel Watson, The Wharton School of the University of Pennsylvania
Lynne Butler*, Haverford College
Curtis Greene, Haverford College
(93105339)

5:45 p.m.
Some remarkable families of multiple regular representations of $S_n$ .
Francois Bergeron, L'Universit\'e du Qu\'ebec \`a Montr\'eal
Adriano M Garsia*, University of California, San Diego
Glenn P Tesler, University of California, San Diego
(93105253)
Inquiries: meet@ams.org

