Groups and Dynamics Seminar

Date: April 4, 2018

Time: 3:00PM - 4:00PM

Location: BLOC 220

Speaker: Dzmitry Dudko, Stony Brook University

Title: Conjugacy problem in mapping class bisets

Abstract: For a branched covering f of a sphere, the mapping class biset M(f) is the set of maps obtained by pre- and post-composing f with elements of the mapping class group. Maps in M(f) are considered up to isotopy relative the postcritical set. We will show that the conjugacy problem in M(f), known also as Thurston equivalence, is decidable.