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math.GT2012★ 2 cited
Non-trivial self-concordances and a recent conjecture by Botvinnik
Wolfgang Steimle
The goal of this note is to construct, on many manifolds, non-trivial concordances from the identity to itself. This produces counterexamples to a recent conjecture by Botvinnik.
math.GT2009
Obstructions to Fibering a Manifold
F. T. Farrell, Wolfgang Lück, Wolfgang Steimle
Given a map f: M \to M of closed topological manifolds we define torsion obstructions whose vanishing is a necessary condition for f being homotopy equivalent to a projection of a…