Diffeomorphisms having rotation sets with non-empty interior
Diffeomorphisms having rotation sets with non-empty interior
In 1991 Llibre and MacKay proved that if $f$ is a 2-torus homeomorphism isotopic to identity and the rotation set of $f$ has a non empty interior then $f$ has positive topological entropy. Here, we give a converselike theorem. We show that the interior of the rotation set of a …