Minimal homeomorphisms and topological $K$-theory

Abstract

The Lefschetz fixed point theorem provides a powerful obstruction to the existence of minimal homeomorphisms on well-behaved spaces such as finite CW-complexes. We show that these obstructions do not hold for more general spaces. More precisely, minimal homeomorphisms are constructed on space with prescribed $K$-theory or cohomology. We also allow for some control of the map on $K$-theory and cohomology induced from these minimal homeomorphisms. This allows for the construction of many minimal homeomorphisms that are not homotopic to the identity. Applications to $C^{\ast }$-algebras will be discussed in another paper.

27 pages. To appear in Groups, Geom. Dyn. This supersedes arXiv:1907.03851, which will not be submitted for publication