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arXiv:math/9812132 [math.GR]AbstractReferencesReviewsResources

Free crossed resolutions of groups and presentations of modules of identities among relations

Ronald Brown, A. Razak Salleh

Published 1998-12-22Version 1

We give formulae for a module presentation of the module of identities among relations for a presentation of a group, in terms of information on 0- and 1-combings of the Cayley graph. This is seen as a special case of extending a partial free crossed resolution of a group given a partial contracting homotopy of its universal cover.

Comments: 34 pages, LaTeX2E, with xypic
Categories: math.GR, math.AT
Subjects: 20F05, 20J05, 20L10, 18G50, 57M07
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