Meeting dates: Tuesdays (Topology Seminar) 1:50-2:50 pm in CH228 and
Thursdays (Geometric Group Theory Seminar) from 1:50 to 2:50 pm in MW 152 or Enarson Classroom Bldg 354
Organizers: Yu-Chan Chang, Rima Chatterjee, Jingyin Huang, Jean Lafont, Beibei Liu, Amelia Pompilio
Jan 13 -
Jan 15 -
Jan 20 - Jan 22 - Special events: Zassenhaus Lecture series by June Huh
Jan 27 -
Jan 29 -
Feb 3 -
Feb 5 - Doron Puder (IAS, Tel Aviv)
Joint speaker with the Combinatorics Seminar
Feb 10 -
Feb 12 - Zhenghao Rao (Rutgers)
Feb 17 - Reserved
Feb 19 - Katherine Goldman (McGill)
Feb 24 - Inhyeok Choi (KIAS)
Feb 26 - Pratit Goswami (University of Oklahoma)
Dehn Functions of Coabelian Subgroups
The study of Dehn functions has developed into a major area of research in geometric group theory mainly because the growth types of these functions are quasi-isometry invariants of finitely presented groups. The Dehn function of a finitely presented group G is also connected to the complexity of solving the word problem in G namely, a finitely presented group has solvable word problem if and only if the Dehn function for a finite presentation is recursive. In this talk, we will discuss new methods for computing the precise Dehn functions of coabelian subgroups of direct products of groups, that is, subgroups which arise as kernels of homomorphisms from the direct product onto a free abelian group. This is joint work with Noel Brady and Rob Merrell.
Mar 3 - Leslie Mavrakis (Utah)
Mar 5 - Xiangdong Xie (BGSU)
Mar 10 -
Mar 12 - Wenyu Pan (U Toronto)
Mar 24 -
Mar 26 - Gil Goffer (UCSD)
Mar 31 - Thang Nguyen (FSU)
April 2 -
April 7 - Corey Bregman (Tufts)
April 9-
April 14 -
April 16 - Yunhui Wu (Tsinghua University)
April 21 -
April 23 -