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math.GR2015
The scale function and tidy subgroups
Albrecht Brehm, Maxime Gheysens, Adrien Le Boudec +1
This exposition article arose from two talks given during the Oberwolfach Arbeitsgemeinschaft on Totally Disconnected Groups in October 2014. This is an introduction to the structu…
math.GR2015
Fixed points for bounded orbits in Hilbert spaces
Maxime Gheysens, Nicolas Monod
Consider the following property of a topological group G: every continuous affine G-action on a Hilbert space with a bounded orbit has a fixed point. We prove that this property ch…