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Factoring in the hyperelliptic Torelli group

Authors :
Dan Margalit
Tara E. Brendle
Source :
Mathematical Proceedings of the Cambridge Philosophical Society. 159:207-217
Publication Year :
2015
Publisher :
Cambridge University Press (CUP), 2015.

Abstract

The hyperelliptic Torelli group is the subgroup of the mapping class group consisting of elements that act trivially on the homology of the surface and that also commute with some fixed hyperelliptic involution. The authors and Putman proved that this group is generated by Dehn twists about separating curves fixed by the hyperelliptic involution. In this paper, we introduce an algorithmic approach to factoring a wide class of elements of the hyperelliptic Torelli group into such Dehn twists, and apply our methods to several basic elements.<br />Comment: 9 pages, 7 figures

Details

ISSN :
14698064 and 03050041
Volume :
159
Database :
OpenAIRE
Journal :
Mathematical Proceedings of the Cambridge Philosophical Society
Accession number :
edsair.doi.dedup.....00d331c47750fec0d639fbaa7e2d2b50