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Monday, February 17, 2025

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4:00pm
Some Computations with Representations of Finite Chevalley Groups in Equal Characteristic [3]
02/17/2025 - 4:30pm

I will discuss two computations involving representations of finite Chevalley groups in equal characteristic. The first one reduces by an argument of Bao Le Hung and Tony Feng to description of a class in top homology of a certain affine Springer fiber (performed jointly with Bao Le Hung, Tony Feng and Pablo Boixeda Alvarez). The second one (joint with Michael Finkelberg, David Kazhdan and Calder Morton-Ferguson) involves a new basis for the ring O(T) of regular functions on the maximal torus T as a module over the ring O(T)^W of invariant regular functions, different from but related to the basis constructed by Steinberg in 1975.

Location:
KT 801
 
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[1] https://calendar.math.yale.edu/calendar/grid/day/2025-02-16 [2] https://calendar.math.yale.edu/calendar/grid/day/2025-02-18 [3] https://calendar.math.yale.edu/event/some-computations-representations-finite-chevalley-groups-equal-characteristic [4] https://calendar.math.yale.edu/print/list/calendar/grid/day/2025-02-17 [5] webcal://calendar.math.yale.edu/calendar/export.ics