Existence of Anosov diffeomorphisms on infra-nilmanifolds modeled on free nilpotent Lie groups

Abstract

An infra-nilmanifold is a manifold which is constructed as a quotient space $\Gamma \backslash G$ of a simply connected nilpotent Lie group $G$, where $\Gamma$ is a discrete group acting properly discontinuously and cocompactly on $G$ via so called affine maps. The manifold $\Gamma \backslash G$ is said to be modeled on the Lie group $G$. This class of manifolds is conjectured to be the only class of closed manifolds allowing an Anosov diffeomorphism. However, it is far from obvious which of these infra--nilmanifolds actually do admit an Anosov diffeomorphism. In this paper we completely solve this question for infra-nilmanifolds modeled on a free $c$--step nilpotent Lie group.

arXiv comment19 pages; Section 5 (Applications) added; to appear in TMNA

Cited by in corpus (1)

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