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Talk

Discrete subgroups of G x G intersecting the diagonal in lattices

  • Subhadip Dey (MPI MiS, Leipzig)
A3 01 (Sophus-Lie room)

Abstract

Let G be a noncompact simple real Lie group (e.g., G = SL(2,R)), and let Γ be a Zariski dense discrete subgroup of G × G whose intersection with the diagonal subgroup Δ(G) is a lattice. In this talk, we will present some structural constraints on such subgroups Γ and discuss related questions. This is based on ongoing joint work with Sebastian Hurtado.

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