After the amazing construction due to Patterson and Sullivan in the seventies, conformal densities have played a key role in the understanding of ergodic properties of quotients of hyperbolic space by Fuchsian or Kleinian groups. Later the theory was generalized in many directions, the most general setting in which the results are equally satisfying being quotients of CAT(-1)-spaces by non-elementary discrete isometry groups. In this talk I will speak about a generalization of the Patterson-Sullivan construction to discrete isometry groups of spaces which are CAT(0), but far from being CAT(-1) in the sense that every geodesic is contained in an isometric embedding of a Euclidean space. In this setting interesting new phenomena occur.
Dienstag, den 5. November 2013 um 13:30 Uhr, in INF 288, HS5 Dienstag, den 5. November 2013 at 13:30, in INF 288, HS5
Der Vortrag folgt der Einladung von The lecture takes place at invitation by Professor Dr. Anna Wienhard