Seminario: “Asymptotic Maslov indices for twist maps”

Martedì 28 novembre 2017, ore 12:30 - Aula 2AB40 - Anna Florio


Martedì 28 Novembre 2017 alle ore 12:30 in Aula 2AB40 Anna Florio (dottoranda presso Université d’Avignon et des Pays du Vaucluse) terrà un seminario dal titolo “Asymptotic Maslov indices for twist maps”.

The asymptotic Maslov index gives us the angular asymptotic velocity at which the tangent vectors of a surface rotate, with respect to the linearised dynamics, inherited from a given diffeomorphism. After having defined the asymptotic Maslow index -also called Torsion- for surface diffeomorphisms, we study the specific case of twist diffeomorphisms over the annulus. We present results concerning the link between properties of the Torsion and the dynamics of twist maps.