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Paper detail

Ends of groups: a nonstandard perspective

We give a nonstandard treatment of the notion of ends of proper geodesic metric spaces. We then apply this nonstandard treatment to Cayley graphs of finitely generated groups and give nonstandard proofs of many of the fundamental results concerning ends of groups. We end with an analogous nonstandard treatment of the ends of relatively Cayley graphs, that is Cayley graphs of cosets of finitely generated groups.

preprint2010arXivOpen access
Isaac Goldbring
math.LOmath.GR
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Isaac Goldbring

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