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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Topological finite generation of certain compact open subgroups of tree automorphisms.

## Topological finite generation of certain compact open subgroups of tree automorphisms.Add to your list(s) Download to your calendar using vCal - Shahar Mozes (Hebrew University of Jerusalem)
- Thursday 06 April 2017, 11:00-12:00
- Seminar Room 2, Newton Institute.
If you have a question about this talk, please contact info@newton.ac.uk. NPC - Non-positive curvature group actions and cohomology 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. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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