Department of

Mathematics


Seminar Calendar
for Algebra, Geometry and Combinatorics events the year of Tuesday, February 19, 2019.

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More information on this calendar program is available.
Questions regarding events or the calendar should be directed to Tori Corkery.
     January 2019          February 2019            March 2019     
 Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa   Su Mo Tu We Th Fr Sa
        1  2  3  4  5                   1  2                   1  2
  6  7  8  9 10 11 12    3  4  5  6  7  8  9    3  4  5  6  7  8  9
 13 14 15 16 17 18 19   10 11 12 13 14 15 16   10 11 12 13 14 15 16
 20 21 22 23 24 25 26   17 18 19 20 21 22 23   17 18 19 20 21 22 23
 27 28 29 30 31         24 25 26 27 28         24 25 26 27 28 29 30
                                               31                  

Thursday, January 31, 2019

3:00 pmThursday, January 31, 2019

Rescheduled

Thursday, February 14, 2019

3:00 pm in 347 Altgeld Hall,Thursday, February 14, 2019

Quiver varieties and root multiplicities for symmetric Kac-Moody algebras

Peter Tingley   [email] (Loyola University, Chicago)

Abstract: We discuss combinatorial upper bounds on dimensions of certain imaginary root spaces for symmetric Kac-Moody algebras. These come from a realization of the infinity crystal using quiver varieties. The framework is quite general, but we only work out specifics for one special case. We conjecture that our bound is quite tight, and give both computational evidence and heuristic justification for this conjecture, but unfortunately not a proof.

Thursday, March 28, 2019

3:00 pm in 347 Altgeld Hall,Thursday, March 28, 2019

Complexity, Combinatorial Positivity, and Newton Polytopes

Colleen Robichaux   [email] (UIUC)