University of Minnesota Combinatorics Seminar 

date  speaker  affiliation  title (possibly click for an abstract) 
Fall Semester  
September 18  Dennis Stanton  Univ. of Minnesota  Linearization formulas for orthogonal polynomials 
September 25  Vic Reiner  Univ. of Minnesota  The diameter problem for reduced words and galleries 
October 2  Adam Goyt  Minnesota State  Moorhead  Packing Patterns in Set Partitions 
October 9  Jason Morton  Stanford/Penn State  Holographic algorithms without matchgates 
October 16  Aminul Huq  Univ. of Minnesota  Rochester  Generalized ChungFeller Theorems for lattice paths 
October 23  Lauren Williams  Univ. of California  Berkeley  Tableaux combinatorics for the asymmetric exclusion process and AskeyWilson polynomials 
October 30  Alex Woo  St. Olaf College  Explicit Grobner bases for Schubert slices 
November 6  Eric Sommers  U. Mass  Amherst  A survey of RobinsonSchensted algorithms in types B/C and their connections to Lie theory 
November 13  Jia Huang  Univ. of Minnesota  Invariant theory of finite sparse linear groups 
November 20  Ionut CiocanFontanine  Univ. of Minnesota  An identity related to the quantum cohomology of the Hilbert scheme of n points in the complex plane 
November 27  No seminar  Thanksgiving break  
December 4  Gregg Musiker  MIT  Positivity results for cluster algebras arising from surfaces 
December 11 at 4:40pm  Pavlo Pylyavskyy  Univ. of Michigan  Total positivity in loop groups: Chevalley generators
*Note unusual time slot one hour later!* 
December 18  No seminar  final exams  
Spring semester  
January 22  Sami Assaf  MIT  Affine dual equivalence and kSchur positivity 
January 29  No seminar (organizer outoftown)  
February 5  Maria Axenovich  Iowa State Univ.  On graphs with forbidden induced subgraphs  editing and structure 
February 12  Vic Reiner  Univ. of Minnesota  A multivariate "maj" hook formula for forests 
February 19  No seminar (organizer outoftown)  
February 26  Kevin Dilks  Univ. of Minnesota  Affine Descents and the Steinberg Torus 
March 5  Nathan Williams  Univ. of Minnesota  Cyclic sieving in Young's lattice 
March 12  Liping Li  Univ. of Minnesota  AR quivers and the Riedtmann structure theorem 
March 19  No seminar spring break  
March 26  Andy Berget  Univ. of California  Davis  The rank partition of a matroid 
April 2  Vic Reiner  Univ. of Minnesota  A multivariate "inv" hook formula for forests 
April 9  Marcelo Aguiar  Texas A & M University  The Hopf monoid of generalized permutahedra 
April 16  Vic Reiner  Univ. of Minnesota  Rational functions and valuations on cones 
April 23  Vic Reiner  Univ. of Minnesota  Rational functions and valuations on cones (continued) 
April 30  Gus Lehrer  Univ. of Sydney  Hodge numbers of algebraic varieties over number fields 
May 7  Gus Lehrer  Univ. of Sydney  Reflection subgroups of affine Weyl groups 
May 14  Nathan Owen Ilten  Freie Universitat  Berlin  Comparing Ehrhart Polynomials via TDeformations 
