AMS Sectional Meeting Program by Special Session

Current as of Sunday, October 16, 2005 01:09:10

Associate secretaries:
Lesley M Sibner, AMS lsibner@duke.poly.edu

Saturday October 8, 2005, 8:30 a.m.-10:50 a.m.
Special Session on Algebraic and Geometric Combinatorics, I
Room 202, Olin Hall
Organizers:
Cristian P. Lenart, State University of New York at Albany lenart@csc.albany.edu
Lauren L. Rose, Bard College rose@bard.edu
Sheila Sundaram, Bard College sundaram@bard.edu
- 8:30 a.m.
  Matroid Steiner complexes are Laplacian integral.
  Art Duval*, University of Texas at El Paso
  (1009-05-195)
- 9:00 a.m.
  The Bergman Complex of a Matroid and Phylogenetic Trees.
  Caroline Klivans*, University of Chicago
  (1009-05-182)
- 9:30 a.m.
  Shelling and $h$-vectors of certain nonsimplicial polytopes.
  Margaret M. Bayer*, University of Kansas
  (1009-52-162)
- 10:00 a.m.
  Weak order on labelled trees and shelling skeleta of Coxeter-like complexes.
  Patricia Hersh*, Indiana University
  (1009-05-206)
- 10:30 a.m.
  Disproving the Neggers conjecture.
  John R. Stembridge*, University of Michigan
  (1009-05-119)

Saturday October 8, 2005, 2:30 p.m.-4:50 p.m.
Special Session on Algebraic and Geometric Combinatorics, II
Room 202, Olin Hall
Organizers:
Cristian P. Lenart, State University of New York at Albany lenart@csc.albany.edu
Lauren L. Rose, Bard College rose@bard.edu
Sheila Sundaram, Bard College sundaram@bard.edu
- 2:30 p.m.
  Block inclusions and cores of partitions.
  Jorn Olsson, University of Copenhagen
  Dennis Stanton*, University of Minnesota
  (1009-05-153)
- 3:00 p.m.
  Shelling totally nonnegative flag varieties.
  Lauren K Williams*, University of California, Berkeley
  (1009-05-40)
- 3:30 p.m.
  Something old and something new on infinitesimal rigidity of convex polyhedra.
  Igor Pak*, M.I.T.
  (1009-05-159)
- 4:00 p.m.
  Combinatorics of Permutohedra and Associahedra.
  Alexander Postnikov*, MIT
  (1009-05-175)
- 4:30 p.m.
  Congruences for Combinatorial Sequences.
  Emeric Deutsch, Polytechnic University
  Bruce E. Sagan*, Michigan State University
  (1009-05-21)

Sunday October 9, 2005, 8:30 a.m.-10:50 a.m.
Special Session on Algebraic and Geometric Combinatorics, III
Room 202, Olin Hall
Organizers:
Cristian P. Lenart, State University of New York at Albany lenart@csc.albany.edu
Lauren L. Rose, Bard College rose@bard.edu
Sheila Sundaram, Bard College sundaram@bard.edu
- 8:30 a.m.
  The Horn recursions for Schur $P$- and $Q$- functions.
  K. Purbhoo, University of British Columbia
  F. Sottile*, Texas A&M University
  (1009-05-39)
- 9:00 a.m.
  On the factorization of Kazhdan-Lusztig basis elements.
  Mark A. Skandera*, Haverford College
  (1009-05-170)
- 9:30 a.m.
  Laurent phenomenon via quiver representations.
  Andrei Zelevinsky*, Northeastern University
  (1009-05-131)
- 10:00 a.m.
  The lattice of noncrossing partitions via representation theory of quivers.
  Hugh R. Thomas*, University of New Brunswick
  Colin Ingalls, University of New Brunswick
  (1009-05-217)
- 10:30 a.m.
  Ideals in the nilradical of a Borel subalgebra.
  Eric Sommers*, U of Massachusetts, Amherst
  (1009-17-97)

Sunday October 9, 2005, 2:30 p.m.-4:20 p.m.
Special Session on Algebraic and Geometric Combinatorics, IV
Room 202, Olin Hall
Organizers:
Cristian P. Lenart, State University of New York at Albany lenart@csc.albany.edu
Lauren L. Rose, Bard College rose@bard.edu
Sheila Sundaram, Bard College sundaram@bard.edu
- 2:30 p.m.
  Lexicographic initial ideals.
  Jessica Sidman*, Mount Holyoke College
  (1009-13-101)
- 3:00 p.m.
  Global residues for sparse polynomial systems.
  Ivan Soprunov*, University of Massachusetts, Amherst
  (1009-14-137)
- 3:30 p.m.
  Combinatorics of Rota-Baxter algebras.
  Li Guo*, Rutgers University at Newark
  (1009-05-225)
- 4:00 p.m.
  Permutation enumeration and homology representations.
  John Shareshian*, Washington University
  Michelle Wachs, University of Miami
  (1009-05-226)

Inquiries: meet@ams.org