Geometric Group Theory Seminarm - Yu-Chan Chang

Thu, September 10, 2026
1:50 pm - 2:50 pm
Cockins Hall 228

Yu-Chan Chang
The Ohio State University

Title
Isomorphism Problems for Bestvina--Brady Groups

Abstract
Bestvina--Brady groups are subgroups of right-angled Artin groups, and both families of groups are defined on finite simple graphs. This talk will address two isomorphism problems concerning Bestvina--Brady groups. Specifically, I will discuss how that tree spanners and matroids come into play when answering these questions. This is joint work with Lorenzo Ruffoni.

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