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  3. Connectivity Properties of Group Actions on Non-Positively Curved Spaces (Repost)

Connectivity Properties of Group Actions on Non-Positively Curved Spaces (Repost)

Posted By: DZ123
Date: 18 Nov 2017 18:26:42
Connectivity Properties of Group Actions on Non-Positively Curved Spaces (Repost)

Robert Bieri, Ross Geoghegan, "Connectivity Properties of Group Actions on Non-Positively Curved Spaces"
English | 2003 | ISBN: 0821831844 | PDF | pages: 96 | 1.0 mb

Generalizing the Bieri-Neumann-Strebel-Renz Invariants, this memoir presents the foundations of a theory of (not necessarily discrete) actions $\rho$ of a (suitable) group $G$ by isometries on a proper CAT(0) space $M$. It introduces the passage from groups $G$ to group actions $\rho$ that implies the introduction of 'Sigma invariants'.
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