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arxiv: 1103.3873 · v3 · pith:7JLOB3FYnew · submitted 2011-03-20 · 🧮 math.GR · math.GT

Aspherical groups and manifolds with extreme properties

classification 🧮 math.GR math.GT
keywords asphericalgroupmanifoldsclosedcoarselygroupspresentationproperties
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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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