AMS Sectional Meeting Program by AMS Special Session

Current as of Saturday, April 16, 2011 00:22:58

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Program  ·  Deadlines  ·  Registration/Housing/Etc.
Special Event or Lecture  ·  Inquiries: meet@ams.org

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2011 Spring Eastern Sectional Meeting
College of the Holy Cross, Worcester, MA
April 9-10, 2011 (Saturday - Sunday)
Meeting #1070

Associate secretaries:

Steven H Weintraub, AMS shw2@lehigh.edu

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Special Session on Combinatorics of Coxeter Groups

• Saturday April 9, 2011, 8:30 a.m.-10:45 a.m.
  Special Session on Combinatorics of Coxeter Groups, I
  Rm 123, ONeil Hall
  Organizers:
  Dana C. Ernst, Plymouth State University dcernst@plymouth.edu
  Matthew Macauley, Clemson University
  

  • 8:30 a.m.
    On the mu-coefficients of Kazhdan-Lusztig polynomials.
    Gregory S. Warrington*, University of Vermont
    (1070-05-208)
  • 9:00 a.m.
    A Riemann--Roch Theorem For Acyclic Heaps Of Pieces.
    Brent G Pohlmann*, California Maritime Academy
    (1070-05-237)
  • 9:30 a.m.
    Full Heaps and Minuscule Posets.
    Zachary Strider McGregor-Dorsey*, University of Colorado, Boulder
    (1070-05-187)
  • 10:00 a.m.
    Polytopal subcomplexes and homology representations of Coxeter groups.
    Richard M Green*, University of Colorado at Boulder
    (1070-20-133)
• Saturday April 9, 2011, 3:00 p.m.-5:50 p.m.
  Special Session on Combinatorics of Coxeter Groups, II
  Rm 123, ONeil Hall
  Organizers:
  Dana C. Ernst, Plymouth State University dcernst@plymouth.edu
  Matthew Macauley, Clemson University
  

  • 3:00 p.m.
    A uniform bijection between nonnesting and noncrossing partitions.
    Drew Armstrong, University of Miami
    Christian Stump*, LaCIM, Université du Québec, Montréal
    Hugh Thomas, University of New Brunswick
    (1070-05-130)
  • 3:30 p.m.
    The enumeration of fully commutative affine permutations.
    Christopher R H Hanusa*, Queens College of the City University of New York
    Brant C Jones, James Madison University
    (1070-05-71)
  • 4:00 p.m.
    Abacus models for parabolic quotients of affine Weyl groups.
    Christopher R. H. Hanusa, Queens College (CUNY)
    Brant C. Jones*, James Madison University
    (1070-05-195)
  • 4:30 p.m.
    Homology representations arising from a hypersimplex.
    Jacob Harper*, University of Colorado at Boulder
    (1070-05-144)
  • 5:00 p.m.
    Towards a cyclic version of Matsumoto's theorem.
    Dana C. Ernst, Plymouth State University
    Richard M. Green, University of Colorado
    Matthew Macauley*, Clemson University
    (1070-20-211)
  • 5:30 p.m.
    The cyclically fully commutative elements in a Coxeter group.
    Shih-Wei Chao*, Clemson University, SC
    Matthew Macauley, Clemson University, SC
    (1070-05-244)
• Sunday April 10, 2011, 8:30 a.m.-10:45 a.m.
  Special Session on Combinatorics of Coxeter Groups, III
  Rm 123, ONeil Hall
  Organizers:
  Dana C. Ernst, Plymouth State University dcernst@plymouth.edu
  Matthew Macauley, Clemson University
  

  • 8:30 a.m.
    Classification of the T-avoiding permutations and generalizations to other Coxeter groups.
    Joseph Cormier*, Plymouth State University
    Dana C. Ernst, Plymouth State University
    Zachariah Goldenberg, Plymouth State University
    Jessica Kelly, Plymouth State University
    Christopher Malbon, Plymouth State University
    (1070-05-286)
  • 9:00 a.m.
    Enumerating permutations containing few copies of 321 and 3412.
    Daniel Daly*, Southeast Missouri State University
    (1070-05-191)
  • 9:30 a.m.
    Parking Modules.
    Drew Armstrong*, University of Miami
    Victor Reiner, University of Minnesota
    Brendon Rhoades, Massachusetts Institute of Technology
    (1070-05-148)
  • 10:00 a.m.
    Groupoids with root systems.
    Matthew J. Dyer*, University of Notre Dame
    (1070-20-163)
• Sunday April 10, 2011, 3:00 p.m.-5:20 p.m.
  Special Session on Combinatorics of Coxeter Groups, IV
  Rm 123, ONeil Hall
  Organizers:
  Dana C. Ernst, Plymouth State University dcernst@plymouth.edu
  Matthew Macauley, Clemson University
  

  • 3:00 p.m.
    A refinement of weak order intervals into distributive lattices.
    Hugh Denoncourt*, Rochester, MN
    (1070-05-240)
  • 3:30 p.m.
    Pattern characterization of rationally smooth affine Schubert varieties of type A.
    Andrew E Crites*, University of Washington
    Sara Billey, University of Washington
    (1070-05-62)
  • 4:00 p.m.
    Applications of Zero-Hecke Algebras.
    Tom Denton*, University of California, Davis
    (1070-05-206)
  • 4:30 p.m.
    Geometrical enumeration of certain factorisations of a Coxeter element in finite reflection groups.
    Vivien Ripoll*, LaCIM, UQAM
    (1070-20-254)
  • 5:00 p.m.
    Centers of cyclotomic Hecke algebras.
    Oliver Ruff*, Kent State University at Stark
    (1070-20-36)

Inquiries: meet@ams.org

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