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NCG

Seminar

An invitation to bounded cohomology

Monod, N (Geneva)
Wednesday 20 December 2006, 10:00-11:00

Seminar Room 1, Newton Institute

Abstract

Historically, bounded cohomology has its roots in the cohomology of Banach algebras (after B.E. Johnson). M. Gromov turned it into a powerful and versatile tool in geometry and group theory. Lately, bounded cohomology has found applications in non-commutative measure theory, being a central tool for certain orbit equivalence rigidity results.

This lecture will present a leisurly and non-specialized introduction to bounded cohomology. We will highlight its connection to topics such as amenability, characteristic classes, quasification, rigidity, orbit equivalence.

Audio

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