Aspherical groups and manifolds with extreme properties

Details Aspherical groups and manifolds with extreme properties Aspherical groups and manifolds with extreme properties

2011-03-20

arxiv.org/abs/1103.3873v3

Mathematics

Group Theory

23 pages. This is the first version. Comments are welcome. v2: This is a preliminary version of the paper. Comparing to v1 man

Scientific paper

We prove that every finitely generated group with recursive aspherical presentation embeds into a group with finite aspherical presentation. This and several known facts about groups and manifolds imply that there exists a 4-dimensional closed aspherical manifold $M$ such that the fundamental group $\pi_1(M)$ coarsely contains an expander, and so it has infinite asymptotic dimension, is not coarsely embeddable into a Hilbert space, and does not satisfy the Baum-Connes conjecture with coefficients. Closed aspherical manifolds with any of these properties were previously unknown.

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