On Ihara's lemma for definite unitary groups

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• Xiangqian Yang (Peking University)
• Tuesday 28 October 2025, 14:30-15:30
• MR13.

If you have a question about this talk, please contact Dmitri Whitmore.

Clozel, Harris and Taylor proposed a generalized Ihara’s lemma for definite unitary groups. In this talk, we prove some cases of their conjecture under the assumption of banal coefficients. The proof relies on the recent work of Zhu on unipotent categorical local Langlands correspondence, and the construction of Igusa stacks by Daniels, van Hoften, Kim and Zhang.

This talk is part of the Number Theory Seminar series.

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