# Maxime Zavidovique: Weak KAM solutions of conservative twist maps of the annulus

**Time: **
Thu 2022-03-03 13.00

**Location: **
Zoom meeting ID: https://kth-se.zoom.us/j/61173989405

**Participating: **
Maxime Zavidovique (Institut de Mathématiques de Jussieu - Paris Rive Gauche)

**Abstract:** When studying the dynamics of conservative Twist maps of the annulus, a first thing to look for is the presence of invariant essential circles. There may not be any and weak KAM solutions provide a more general class of objects that always exist (at all cohomology classes) and from which are deduced backward invariant sets called pseudographs. We will explain that there exists a continuous choice of such weak KAM solutions with respect to the cohomology class. Moreover we will provide a rather precise description of how those weak KAM solutions can be constructed.