Topology and Geometric Group Theory Seminars at the Ohio State University

Aug 26 - 

Aug 28-

Sep  2 -

Sep 4-

Sep 9-

Sep 11-

Sep 16-  Yu-Chan Chang (OSU)

Dehn Functions of Bestvina--Brady Groups. 

Dehn functions are quasi-isometry invariants of finitely presented groups that measure the complexity of the word problem. Dison showed that the Dehn functions of Bestvina--Brady groups are at most quartic, and Brady gave examples of Bestvina--Brady groups that realize quadratic, cubic, and quartic Dehn functions.

In this talk, I will present a complete classification of the Dehn functions of Bestvina--Brady groups. This is joint work with Jerónimo García-Mejía and Matteo Migliorini. 

Sep 18-

Sep 23- Dragomir Saric (CUNY)

Sep 25-

Sep 30- Thomas Ng (Brandeis)

Oct 2- Hyein Choi (Rice)

Oct 7-

Oct 9- Franco Vargas Pallete (Arizona State)

Oct 14- 

Oct 16- Autumn break

Oct 21- 

Oct 23-Mary He (University of Oklahoma)

Oct 28-  Louisa Liles (OSU)  Lecture series 1

Oct 30- Louisa Liles (OSU) Lecture series 2

Nov 4- Louisa Liles (OSU)  Lecture series 3

Nov 6-  

Nov 11- holiday

Nov 13-

Nov 18-

Nov 20- Jim Fowler

Nov 25- Elizabeth Buchanan (University of Iowa)

Nov 27- Thanksgiving

Dec 2-

Dec 4-

Dec 9- Qiuyu Ren (UC Berkeley)

Dec 11-