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arXiv:1302.5982 [math.GR]AbstractReferencesReviewsResources

Group actions with commensurated subsets, wallings and cubings

Yves Cornulier

Published 2013-02-25, updated 2016-08-13Version 2

We study commensurating actions of groups and the associated properties FW and PW, in connection with wallings, median graphs, CAT(0) cubings and multi-ended Schreier graphs.

Comments: 78 pages, no figure. Preliminary version, comments welcome! v1->v2 extended version: the new Section 7 was partly extracted from Section 3; some subsections are new (notably 4H and from 7B to 7F)
Categories: math.GR, math.GT
Subjects: 20F65, 20B25, 05C12, 20B27, 20E22
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