Preprint Seminarhttp://www-math.umd.edu/research/seminars.html Finite presentation of the tame fundamental group by Hélène Esnault, Mark Shusterman, Vasudevan Srinivas http://www-math.umd.edu/research/seminars.html Mon, 02 Feb 2026 16:00:00 EST Where: Kirwan Hall 1308
Speaker: Bogdan Zavyalov (UMD) - https://bogdanzavyalov.com/
Abstract: I will explain why the étale fundamental group of a smooth projective variety is finitely presented, following the recent work in arXiv:2102.13424.
]]> "Complex Bott Periodicity in algebraic geometry" by Hannah Larson and Ravi Vakil http://www-math.umd.edu/research/seminars.html Mon, 16 Feb 2026 16:00:00 EST Where: Kirwan Hall 1308
Speaker: Dori Bejleri (UMD) - https://math.umd.edu/~dbejleri/

]]> Torsors on loop groups and the Hitchin fibration by Bouthier and Česnavičius http://www-math.umd.edu/research/seminars.html Mon, 02 Mar 2026 16:00:00 EST Where: Kirwan Hall 1308
Speaker: Wenzhuo Wang (UMD) -

]]> K-theory of rings of continuous functions, by Ko Aoki, arXiv:2402.05257 http://www-math.umd.edu/research/seminars.html Mon, 09 Mar 2026 16:00:00 EDT Where: Kirwan Hall 1308
Speaker: Jonathan Rosenberg (UMD) - https://math.umd.edu/~jmr/
Abstract: When X is a compact Hausdorff space and C(X) is the ring of continuous complex-valued functions on X, K_0(C(X)) coincides with topological K-theory of X, K^0(X). However, for n different from 0, K_n(C(X)) Is not the same as topological K-theory. The exact relationship between the two has been a subject of study for 40 years.
I will explain a bit of the history and how this recent paper of Aoki largely settles the outstanding questions.

]]> Periods detecting Eisenstein series and sum of L-values, by Weixiao Lu and Guodong Xi http://www-math.umd.edu/research/seminars.html Mon, 06 Apr 2026 16:00:00 EDT Where: Kirwan Hall 1308
Speaker: Shenghao Li (UMD) -

Abstract: Relative Langlands duality, formulated by BZSV, predicts some duality properties between 'periods' and 'L-functions'. I will briefly introduce the formulation of global numerical problems, and give several examples, and how this work fits into the framework of BZSV.

https://arxiv.org/abs/2510.12446
]]> Pseudocoherent and Perfect Complexes and Vector Bundles on Analytic Adic Spaces by Andreychev http://www-math.umd.edu/research/seminars.html Mon, 20 Apr 2026 16:00:00 EDT Where: Kirwan Hall 1308
Speaker: Ziyi Huang (UMD) -

Abstract: https://arxiv.org/abs/2105.12591
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