Mathematics – Group Theory
Scientific paper
2011-10-10
Mathematics
Group Theory
Updated the statement of the topological super rigidity theorem to cover the case of CAT(0) fundamental groups
Scientific paper
The geometric superrigidity theorem states broadly, that for $\Gamma$ in a wide class of co-compact lattices, a non-constant, equivariant, harmonic map, with target in a suitable non-positively curved manifold is a totally geodesic embedding up to renormalisation. In this paper we propose a topological analogue: for a wide class of manifolds every codimension-1, $\pi_1$-injective map is a finite cover of an embedding up to homotopy.
Kar Aditi
Niblo Graham A.
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