Ultralimits of maximal representations

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• Beatrice Pozzetti, Heidelberg
• Wednesday 11 October 2017, 16:00-17:00
• MR13.

If you have a question about this talk, please contact Ivan Smith.

Maximal representations are an instance of the so-called higher Teichmüller theory: they form families of discrete subgroups of Sp(2n,R), a higher rank generalization of PSl(2,R), isomorphic to the fundamental group of a surface, that share many common features with holonomies of hyperbolizations. I will discuss joint work with Marc Burger, Alessandra Iozzi and Anne Parreau, in which we study actions on affine buildings arising as ultralimits of maximal representations and observe a clear distinction between phenomena already present in the boundary of the Teichmüller space and new flat features.

This talk is part of the Differential Geometry and Topology Seminar series.

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