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Journal Article

Straightening warped cones

MPS-Authors
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Sawicki,  Damian
Max Planck Institute for Mathematics, Max Planck Society;

External Resource

https://dx.doi.org/10.1142/S179352532050034X
(Publisher version)

https://doi.org/10.48550/arXiv.1705.06725
(Preprint)

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Citation

Sawicki, D., & Wu, J. (2021). Straightening warped cones. Journal of Topology and Analysis, 13(4), 933-957. doi:10.1142/S179352532050034X.


Cite as: https://hdl.handle.net/21.11116/0000-0009-FD96-1
Abstract
We provide the converses to two results of Roe [Warped cones and property A, Geom.
Topol. 9 (2005) 163–178, doi:10.2140/9t.2005.9.163]: first, the warped cone associated
to a free action of an a-T-menable group admits a fibered coarse embedding into a
Hilbert space, and second, a free action yielding a warped cone with property A must be amenable. We construct examples showing that in both cases the freeness assumption is necessary.The first equivalence is obtained also for other classes of Banach spaces, in particular for $L^p$-spaces.