Multitwists in big mapping class groups
Geometric Topology
2025-11-05 v2 Group Theory
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).
Keywords
Cite
@article{arxiv.2301.08780,
title = {Multitwists in big mapping class groups},
author = {George Domat and Federica Fanoni and Sebastian Hensel},
journal= {arXiv preprint arXiv:2301.08780},
year = {2025}
}
Comments
7 pages, 1 figure. V2: small changes, following referee reports suggestions