Centrally extended mapping class groups from quantum Teichmuller theory
Geometric Topology
2016-02-12 v2 Quantum Algebra
Abstract
The central extension of the mapping class groups of punctured surfaces of finite type that arises in quantum Teichm\"uller theory is 12 times the Meyer class plus the Euler classes of the punctures. This is analogous to the result obtained in \cite{FS} for the Thompson groups.
Keywords
Cite
@article{arxiv.1003.5365,
title = {Centrally extended mapping class groups from quantum Teichmuller theory},
author = {Louis Funar and Rinat M. Kashaev},
journal= {arXiv preprint arXiv:1003.5365},
year = {2016}
}
Comments
26p., 13 figures, Advances in Math., to appear