Conjugations on 6-manifolds with free integral cohomology |
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Authors: | Martin Olbermann |
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Institution: | 1. Max-Planck-Institut f??r Mathematik, Bonn, Vivatsgasse 7, 53111, Bonn, Germany
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Abstract: | In this article, we show the existence of conjugations on many smooth simply-connected spin 6-manifolds with free integral
cohomology. In a certain class the only condition on X
6 to admit a conjugation with fixed point set M
3 is the obvious one: the existence of a degree-halving ring isomorphism between the
\mathbb Z2{\mathbb Z_2}-cohomologies of X and M. As a consequence certain 6-manifolds, for which Puppe (J Fixed Point Theory Appl 2(1):85–96, 2007) proved the non-existence of non-trivial orientation-preserving finite group actions, do admit many involutions. |
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Keywords: | |
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