Bounded cohomology and flat bundles

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Date/heure
Date(s) - 13/05/2019
14 h 00 min - 15 h 00 min

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Applying Hironaka resolution of singularities, Gromov proved in 1982 that all characteristic classes of algebraic groups defined over the reals are bounded. We propose a more down-to-earth approach of this result. With the help of the stable commutator norm, we characterize Lie groups with all characteristic classes bounded. This is joined work with Chatterji, Cornulier, Mislin.

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