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arXiv:math/0310127 [math.GR]AbstractReferencesReviewsResources

Automorphisms of Coxeter groups

Patrick Bahls

Published 2003-10-09Version 1

We compute Aut(W) for any even Coxeter group whose Coxeter diagram is connected, contains no edges labeled 2, and cannot be separated into more than 2 connected components by removing a single vertex. The description is given explicitly in terms of the given presentation for the Coxeter group and admits an easy characterization of those groups W for which Out(W) is finite.

Comments: 16 pages, no figures. Submitted to Trans. Amer. Math. Soc
Categories: math.GR
Subjects: 20F55, 20F28
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