Seminar series
Date
Wed, 23 Oct 2024
16:00
16:00
Location
L6
Speaker
Sam Fisher
Organisation
University of Oxford
A group is coherent if all its finitely generated subgroups are finitely presented. Aside from some easy cases, it appears that coherence is a phenomenon that occurs only among groups of cohomological dimension 2. In this talk, we will give many examples of coherent and incoherent groups, discuss techniques to prove a group is coherent, and mention some open problems in the area.