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  • Farre James

    Quasi-minimizing geodesics and horocycles in abelian covers

    10 juin 2026 - 10:00Salle de séminaires IRMA

    We are interested in the behavior of horocycles in the unit tangent bundles to hyperbolic surfaces with infinite topology. The simplest examples of these geometrically infinite surfaces are those with a cocompact abelian symmetry group. I will explain some connections between the large scale geometry of such a cover by way of the “(co)-stable norm” on the deck group, the geometry of certain optimal Lipschitz maps, and fine features of horocycle orbit closures. This is based on joint work (in process) with Or Landesberg and Yair Minsky.
  • Nicolas Stutz

    TBA

    15 juin 2026 - 15:30Salle de séminaires IRMA

    TBA
  • Katrin Wehrheim

    TBA

    21 septembre 2026 - 14:00Salle de séminaires IRMA

    TBA