Zobrazeno 1 - 10
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pro vyhledávání: '"Dreesen, Dennis"'
Autor:
Cave, Chris, Dreesen, Dennis
We give a means of estimating the equivariant compression of a group G in terms of properties of open subgroups G_i whose direct limit is G. Quantifying a result by S.R. Gal, we also study the behaviour of the equivariant compression under amalgamate
Externí odkaz:
http://arxiv.org/abs/1309.4636
Given two finitely generated groups that coarsely embed into a Hilbert space, it is known that their wreath product also embeds coarsely into a Hilbert space. We introduce a wreath product construction for general metric spaces X,Y,Z and derive a con
Externí odkaz:
http://arxiv.org/abs/1307.3122
Autor:
Antolín, Yago, Dreesen, Dennis
The Haagerup property, which is a strong converse of Kazhdan's property $(T)$, has translations and applications in various fields of mathematics such as representation theory, harmonic analysis, operator K-theory and so on. Moreover, this group prop
Externí odkaz:
http://arxiv.org/abs/1305.6748
Autor:
Dreesen, Dennis, Cave, Chris
In the last years, there has been a large amount of research on embeddability properties of finitely generated hyperbolic groups. In this paper, we elaborate on the more general class of locally compact hyperbolic groups. We compute the equivariant $
Externí odkaz:
http://arxiv.org/abs/1303.4250
Autor:
Carette, Mathieu, Dreesen, Dennis
Publikováno v:
Mathematische Zeitschrift 278 (2014) no. 3-4 795-827
All sigma-compact, locally compact groups acting sharply n-transitively and continuously on compact spaces M have been classified, except for n=2,3 when M is infinite and disconnected. We show that no such actions exist for n=2 and that these actions
Externí odkaz:
http://arxiv.org/abs/1212.4021
Autor:
Dreesen, Dennis
We find bounds on the Hilbert space compression of the limit of a directed metric system of groups. We also give estimates on the Hilbert space compression of group extensions of a group $H$ by a a word-hyperbolic group or a group of polynomial growt
Externí odkaz:
http://arxiv.org/abs/1009.2014
Autor:
Dreesen, Dennis
Given the Hilbert space compression of two groups, we find bounds on the Hilbert space compression of their free product. We also investigate the Hilbert space compression of an HNN-extension of a group relative to a finite normal subgroup or a finit
Externí odkaz:
http://arxiv.org/abs/1002.3879
Autor:
Dreesen, Dennis, Petrosyan, Nansen
Given a closed connected Riemannian manifold M and a connected Riemannian manifold N, we study fiberwise volume decreasing diffeomorphisms on the product M x N. Our main theorem shows that in the presence of certain cohomological condition on M and N
Externí odkaz:
http://arxiv.org/abs/0903.4142
Autor:
Cave, Chris, Dreesen, Dennis
Publikováno v:
In Topology and its Applications 1 December 2016 214:66-88
Autor:
DREESEN, DENNIS
Publikováno v:
Proceedings of the American Mathematical Society, 2013 Feb 01. 141(2), 421-436.
Externí odkaz:
https://www.jstor.org/stable/23558856