Seminar Calendar
for events the day of Thursday, April 13, 2017.

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Questions regarding events or the calendar should be directed to Tori Corkery.
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Thursday, April 13, 2017

Number Theory Seminar
11:00 am   in 241 Altgeld Hall,  Thursday, April 13, 2017
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Submitted by sahlgren.
Matt Papanikolas (Texas A&M University)
Limits of function field Bernoulli-Carlitz numbers
Abstract: Because of the classical Kummer congruences, one is able to take p-adic limits of certain natural subsequences of Bernoulli numbers. This leads to notions of p-adic limits of special zeta values and Eisenstein series. In the case of the rational function field K over a finite field, the analogous quantities, called Bernoulli-Carlitz numbers, fail to satisfy Kummer-type congruences. Nevertheless, we prove that certain subsequences of Bernoulli-Carlitz numbers do have v-adic limits, for v a finite place of K, thus leading to new v-adic limits of Eisenstein series. Joint with G. Zeng.

Geometry, Groups and Dynamics/GEAR Seminar
12:00 pm   in 243 Altgeld Hall,  Thursday, April 13, 2017
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Submitted by clein.
Catherine Pfaff (UC Santa Barbara)
To Be Announced

Math-Physics Seminar
12:30 pm   in 464 Loomis Laboratory,  Thursday, April 13, 2017
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Submitted by katz.
Hee-Cheol Kim (Harvard Physics)
To Be Announced

Algebra, Geometry and Combinatorics Seminar
3:00 pm   in 347 Altgeld Hall,  Thursday, April 13, 2017
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Submitted by lescobar.
Maria Gillespie (UC Davis)
A crystal structure on shifted tableaux, with applications to type B Schubert curves
Abstract: We present a new crystal-like structure on shifted (marked) semistandard skew tableaux. The raising and lowering operators commute with jeu de taquin slides, and detect the type B Littlewood-Richardson condition as the highest weight entries. Certain substructures satisfy the Kashiwara crystal axioms for the root system of $\mathrm{GL}_n$. If time permits, we will discuss applications of our new operators to Schubert curves in the orthogonal Grassmannian. This is joint work with Jake Levinson and Kevin Purbhoo.

Spring Department Faculty Meeting
4:00 pm   in 245 Altgeld Hall,  Thursday, April 13, 2017
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Submitted by seminar.
Spring Department Faculty Meeting
Abstract: The Spring Department Faculty Meeting will be held at 4 p.m. in 245 Altgeld Hall, followed by a reception in 239 Altgeld Hall.