Multitwists in big mapping class groups
arXiv:2301.08780 · doi:10.2140/agt.2025.25.3921
Abstract
We show that the closure of the compactly supported mapping class group of an infinite-type surface is not generated by the collection of multitwists (i.e. products of powers of twists about disjoint non-accumulating curves).
7 pages, 1 figure. V2: small changes, following referee reports suggestions