DePaul Algebra and Combinatorics Seminar

Fridays 2:00-3:00 (unless otherwise indicated), Levan 201 (tea and cookies 15 minutes prior in the faculty lounge)

Winter/Spring 2012

date speaker affiliation title (click for an abstract)
February 17 Sarah Witherspoon Texas A& M Representation type and varieties
April 13 Mirkó Visontai U. Pennsylvania On a decomposition of the two-sided Eulerian polynomials
April 20 Tim Ridenour Northwestern Ad-Nilpotent Subalgebras of \(\mathbb{Z}_n\)-graded Lie algebras

Fall 2011

date speaker affiliation title (click for an abstract)
October 7 Alexander Rossi Miller U. Minnesota Reflection arrangements and ribbon representations
October 14 Saul Blanco DePaul The Poset of Shortest Paths in an Interval of the Bruhat Order
October 21 Jeff Bergen DePaul Jacobson Radicals, Ring Extensions, and Polynomial Identities
October 28 Jeff Bergen DePaul Jacobson Radicals, Ring Extensions, and Polynomial Identities (continued)
November 4 Bill Chin DePaul Galois coverings of coalgebras
November 11 Serban Raianu Cal State - Dominguez Hlls Integrals for Hopf algebras and their relation to the antipode (colloquium)
November 18 Tony Giaquinto Loyola Functionals and Graphs of a Frobenius Lie Algebra (colloquium)

Winter/Spring 2011

date speaker affiliation title (click for an abstract)
February 11 Geoffrey Mason UC-Santa Cruz A Brief History of Indicators
February 25 John Stembridge U. of Michigan Admissable W-graphs
March 4 Kyle Petersen DePaul What is the gamma vector? (And what does it count?)
March 11 Mitja Mastnak St. Mary's Univ. Bialgebras and Free Probability
April 6 (Wednesday!) Peter Winkler Dartmouth Overhang
April 8 Aaron Lauve Loyola Introduction to Supercharacter Theory
April 15 Stefan Catoiu DePaul Enveloping Algebras of sl2: Ideals and Representations

Fall 2010

date speaker affiliation title (click for an abstract)
September 17 Kyle Petersen DePaul Reflection length for affine Weyl groups
September 24 Leonid Krop DePaul Isomorphism types of a clas of Hopf algebra extensions I
October 1 Leonid Krop DePaul Isomorphism types of a clas of Hopf algebra extensions II
October 8 Bridget Tenner DePaul The boolean complex of a Coxeter system, part 1
October 15 Kari Ragnarsson DePaul The boolean complex of a Coxeter system, part 2
October 22 Mihai Staic DePaul TBA
October 29 Jeff Bergen DePaul The Nagata-Higman theorem and some generalizations
November 5
November 12 Aaron Lauve Loyola University Chicago TBA
November 19