University of Arkansas Topology Seminar: 3/28/2019

Speaker: Jean-Pierre Mutanguha

Title: Residual finiteness of mapping tori of free groups

I will review a proof of residually finiteness of free groups and free-by-cyclic groups. However, this method fails to work for ascending HNN-extensions of free groups. If time permits, I will give a sketch of Borisov–Sapir's proof that ascending HNN-extensions are residually finite.



BACK TO SCHEDULE