Topological finite generation of certain compact open subgroups of tree automorphisms.
54 mins 12 secs,
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About this item
| Description: |
Mozes, S (Hebrew University of Jerusalem)
Thursday 6th April 2017 - 11:00 to 12:00 |
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| Created: | 2017-04-13 17:14 |
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| Collection: | Non-Positive Curvature Group Actions and Cohomology |
| Publisher: | Isaac Newton Institute |
| Copyright: | Mozes, S |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
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| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | Given a finite permutation group F on d letters, one can define a group of automorphism of a d-regular tree whose local action on the tree is given by the permutation group F. In a joint work with Marc Burger we determine when the maximal compact subgroup of this group is topologically finitely generated. This is motivated by studying uniform lattices in the group of automorphisms of a product of trees.
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