Events for 04/10/2024 from all calendars

Student/Postdoc Working Geometry Seminar

Time: 09:00AM - 10:00AM

Location: BLOC 628

Speaker: Chia-Yu Chang, Texas A&M

Title: Subrank and Hilbert-Mumford, cont'd

Groups and Dynamics Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 123

Speaker: Tatiana Nagnibeda, University of Geneva

Title: On maximal and weakly maximal subgroups in finitely generated groups

Abstract: Margulis and Soifer proved that in a finitely generated linear group all maximal subgroups are of finite index if and only if the group is solvable; otherwise there exist uncountably many maximal subgroups of infinite index, all of them isomorphic to a free group of infinite rank. In the talk we will discuss maximal and weakly maximal subgroups in some non-linear finitely generated groups, such as branch and weakly branch groups and Thompson’s group F.

2D percolation revisited

Time: 4:00PM - 5:00PM

Location: BLOC 117

Speaker: Stanislav Smirnov, University of Geneva

Description: We will discuss the state of our understanding of 2d percolation, and will present a recent proof of its conformal invariance at criticality. Besides being more elegant and conceptual, it also leads to new results, some of which we will discuss. Based on joint work with Mikhail Khristoforov.