Speaker: Jiahong Yu (PKU)
Time: 2:30-4:00pm, October 9, 2023 (Monday)
Place: MCM110
Title: Special formal OD-modules over an algebraically closed field
Abstract: Discuss [BC91, II.3-II.5]. The goal of this talk is to prove Th´eor`emes 5.11 and 5.17.
Speaker: Prof. Bin Xu (Tsinghua University)
Time: 10:30-11:30am, October 11, 2023 (Wednesday)
Place: MCM110
Title: Global A-packets for GSp(2n) and GSO(2n) in the nontempered case
Abstract: Arthur (1989) conjectured that the discrete spectrum of automorphic representations of a connected reductive group over a number field can be decomposed into global A-packets, in terms of which he also conjectured a multiplicity formula. Arthur (2013) proved his conjecture for symplectic and orthogonal groups, in which case the global A-packets are parametrized by self-dual automorphic representations of general linear groups. In this talk, I will report some recent progress on this conjecture for general symplectic and general even orthogonal groups in the nontempered case.
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