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Bounded cohomology, cross ratios and cocycles

Ursula Hamenstaedt
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Abstract

We use cross ratios to describe second real continuous bounded cohomology for locally compact topological groups. We also derive a rigidity result for cocycles with values in the isometry group of a proper hyperbolic geodesic metric space.

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Ursula Hamenstaedt. 2005-08-26. Bounded cohomology, cross ratios and cocycles. https://arxiv.org/abs/math/0508532

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