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arXiv:1204.0214 [math.GR]AbstractReferencesReviewsResources

Notes on the Sigma invariants

Ralph Strebel

Published 2012-04-01, updated 2013-03-01Version 2

Memoir on the Sigma invariants and their applications, version 2

Comments: xiii + 179 pages, 24 figures; for this second version, I have revised sections A5.2 and B4, rewritten section B3, added chapter C, corrected misprints and updated the references
Categories: math.GR
Subjects: 20F05, 20F16, 20E06, 20E34
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