New contact flows on 3-manifolds

Jeudi 19 avril 14:00-15:00 - Boris Hasselblatt - Tufts University

Résumé : Foulon-Ding-Geiges-Handel-Thurston surgery produces contact flows that are unusual and interesting in several ways. The periodic fiber flow in the unit tangent bundle becomes parabolic or even hyperbolic, and the geodesic flow becomes a nonalgebraic contact Anosov flow with larger orbit growth. Recent work by Bishop, Hughes, Vinhage and Yang promises a quantification of the gap between the Liouville and topological entropies.

Lieu : IMO, salle 2L8

Notes de dernières minutes : Café culturel assuré à 13h par Anne Vaugon

New contact flows on 3-manifolds  Version PDF