AMS Sectional Meeting Program by Special Session
Current as of Tuesday, April 12, 2005 15:10:12
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2000 Fall Western Section Meeting
San Francisco, CA, October 2122, 2000
Meeting #958
Associate secretaries:
Bernard Russo, AMS
brusso@math.uci.edu
Special Session on Algebraic and Geometric Combinatorics

Saturday October 21, 2000, 8:00 a.m.10:50 a.m.
Special Session on Algebraic and Geometric Combinatorics, I
Room 310, HSS Building
Organizers:
Jesus De Loera, University of California, Davis deloera@math.ucdavis.edu
Frank Sottile, University of Wisconsin sottile@math.umass.edu

8:00 a.m.
A point configuration whose space of triangulations is disconnected.
Francisco Santos*, University of Cantabria, SPAIN
(95852215)

8:30 a.m.
Categories of triangulations and classifying spaces.
Laura M. Anderson*, Texas A\&M University
Nikolai Y. Mn\"ev, Steklov InstituteSt. Petersburg
(95805220)

9:00 a.m.
Recovering Lexicographic Triangulations.
Carl W Lee*, University of Kentucky
Wendy Weber, Central College
(95852173)

9:30 a.m.
Circuit admissible triangulations of oriented matroids.
J\"org Rambau*, KonradZuseZentrum f\"ur Informationstechnik Berlin
(95805216)

10:00 a.m.
Flag numbers of generalized Eulerian posets.
Margaret M Bayer, University of Kansas
Gabor Hetyei*, UNC Charlotte
(95805270)

10:30 a.m.
The Combinatorics of Multiplices and Ordinary Polytopes.
Margaret M Bayer*, University of Kansas
Aaron M Bruening, University of Kansas
Joshua Stewart, University of Kansas
(95852175)

Saturday October 21, 2000, 3:00 p.m.5:50 p.m.
Special Session on Algebraic and Geometric Combinatorics, II
Room 310, HSS Building
Organizers:
Jesus De Loera, University of California, Davis deloera@math.ucdavis.edu
Frank Sottile, University of Wisconsin sottile@math.umass.edu

3:00 p.m.
Convex, acyclic, and free sets of an oriented matroid.
Paul H Edelman, Univ. of Minnesota
Victor Reiner*, University of Minnesota
Volkmar Welker, Universitaat Marburg
(9580559)

3:30 p.m.
Syzygies of oriented matroids.
Isabella Novik*, UC Berkeley
Alexander Postnikov, UC Berkeley
Bernd Sturmfels, UC Berkeley
(95805111)

4:00 p.m.
Binomial Residues.
Bernd Sturmfels*, UC Berkeley
Eduardo Cattani, University of Massachusetts, Amherst
Alicia Dickenstein, Universidad de Buenos Aires, Argentina
(9580567)

4:30 p.m.
Toric Initial Ideals without Embedded Primes.
Rekha R Thomas*, University of Washington
Serkan Hosten, San Fransisco State University
(95813137)

5:00 p.m.
Geometry and complexity of Groebner fans of codimension three lattice ideals.
Serkan Hosten*, San Francisco State University
Diane Maclagan, Institute for Advanced Studies
Bernd Sturmfels, UC Berkeley
(95852280)

5:30 p.m.
Hilbert schemes and the $n!$ conjecture.
Mark D Haiman*, U.C. San Diego
(95805106)

Sunday October 22, 2000, 8:30 a.m.10:50 a.m.
Special Session on Algebraic and Geometric Combinatorics, III
Room 310, HSS Building
Organizers:
Jesus De Loera, University of California, Davis deloera@math.ucdavis.edu
Frank Sottile, University of Wisconsin sottile@math.umass.edu

8:30 a.m.
Cohomology of BottSamelsons.
Allen I Knutson*, U.C. Berkeley
Rebecca F Goldin, U. of Maryland
(95805288)

9:00 a.m.
Symmetries of GromovWitten invariants.
Alexander Postnikov*, UC Berkeley
(95805179)

9:30 a.m.
Invariant Factors for Matrices over Discrete Valuation Rings and the LittlewoodRichardson Rule.
Glenn Appleby*, Santa Clara University
(95805227)

10:00 a.m.
Shifted quasisymmetric functions and the Hopf algebra of peak functions.
Nantel Bergeron*, York University, Toronto
Stephan Mykytiuk, York University, Toronto
Frank J Sottile, University of Massachusetts, Amherst
Stephanie van Willigenburg, Cornell University
(95805279)

10:30 a.m.
Complementary Algorithms for Tableaux.
Tom Roby*, Cal State Hayward
Frank Sottile, University of Massachusetts
Julian West, University of Victoria
Jeff Stroomer, Xilinx, Inc.
(95805131)

Sunday October 22, 2000, 3:00 p.m.5:50 p.m.
Special Session on Algebraic and Geometric Combinatorics, IV
Room 310, HSS Building
Organizers:
Jesus De Loera, University of California, Davis deloera@math.ucdavis.edu
Frank Sottile, University of Wisconsin sottile@math.umass.edu

3:00 p.m.
On counting permutations in $S_n$ by pairs of congruence classes of major index.
H\'el\`ene Barcelo*, Arizona State University
Robert Maule, Arizona State University
Sheila Sundaram, Wesleyan University
(95805299)

3:30 p.m.
Properties of the quotient complex $Delta(B_{kn})/S_k\wr S_n$.
Patricia L Hersh*, University of Washington
(95805135)

4:00 p.m.
Some surprising similarities between matroids and shifted simplicial complexes.
Art Duval*, University of Texas at El Paso
(95805134)

4:30 p.m.
Symmetry classes of alternatingsign matrices.
Greg Kuperberg*, UC Davis
(95805162)

5:00 p.m.
Random trees and moduli of curves.
Andrei Okounkov*, UC Berkeley
(95805192)

5:30 p.m.
Factoring Uniform Distributions.
Persi Diaconis*, Stanford University
Colin Mallows, AT&T Laboratories
(9580557)
Inquiries: meet@ams.org