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Betti numbers of definable sets

Friday 15th July 2005 - 16:00 to 17:00
INI Seminar Room 1

A spectral sequence associated with a surjective closed mapping allows one to provide upper bounds for the Betti numbers of a wide class of sets defined by formulas with quantifiers in terms of the Betti numbers of auxiliary sets defined by quantifier-free formulas. A review of the recent development in this direction will be presented

University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons