Videos

Aspherical groups and manifolds with extreme properties

Presenter
October 17, 2011
Keywords:
  • Banach space
  • geometric group theory
  • differentiation theory
  • embedding theorems
  • group homology
  • homological algebra
MSC:
  • 58C20
  • 46-xx
  • 46Bxx
  • 54C25
  • 20F65
  • 20Fxx
Abstract
We prove that every aspherical recursively presented group embeds into a group with finite aspherical presentation complex. By results of Gromov and Davis, this implies that there exists a closed aspherical manifold of any dimension >3 (smooth in dimension >4) with universal cover of infinite asymptotic dimension, and not embeddable uniformly into a Hilbert space. It is also a counterexample to the Baum-Connes conjecture with coefficients.