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Boundaries and JSJ Decompositions of CAT(0)-Groups

โœ Scribed by Panos Papasoglu; Eric Swenson


Publisher
Springer
Year
2009
Tongue
English
Weight
444 KB
Volume
19
Category
Article
ISSN
1016-443X

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On the isometry groups of certain CAT(0)
โœ Daniel S. Farley ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 80 KB

We show that the automorphism group of a locally finite tree is discrete, or pro-finite, or not the inverse limit of an inverse system of discrete groups, and provide necessary and sufficient conditions for each of these possibilities to occur. More generally, we demonstrate that for certain proper