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Let X be a product of Hadamard spaces and Γ a discrete group of isometries which contains an element whose projection to each factor translates a geodesic without flat half-plane. Important examples in this context are Kac-Moody groups over a finite fields acting on the associated twin building and discrete groups acting on a product of CAT(-1) spaces. In this talk I will describe the structure of the limit set of Γ, i.e. the set of accumulation points of a Γ-orbit in the geometric compactification of X. If time permits I will also explain results on measure theoretic properties of this geometric limit set.
Freitag, den 18. Januar 2013 um 15:30 Uhr, in INF 288, HS 1 Freitag, den 18. Januar 2013 at 15:30, in INF 288, HS 1
Der Vortrag folgt der Einladung von The lecture takes place at invitation by Prof. Dr. Anna Wienhard