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arXiv:1405.4928 [math.RT]AbstractReferencesReviewsResources

Diagrammatics for Coxeter groups and their braid groups

Ben Elias, Geordie Williamson

Published 2014-05-20, updated 2017-01-09Version 2

We give a monoidal presentation of Coxeter and braid 2-groups, in terms of decorated planar graphs. This presentation extends the Coxeter presentation. We deduce a simple criterion for a Coxeter group or braid group to act on a category.

Comments: Many figures, best viewed in color. Minor updates. This version agrees with the published version
Categories: math.RT, math.GT
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