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Betti numbers of definable sets

Gabrielov, A (Purdue)
Friday 15 July 2005, 16:00-17:00

Seminar Room 1, Newton Institute


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


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