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# Paolo Aluffi : Chern class identities from string theory

(joint with Mboyo Esole) String theory considerations lead to a non-trivial identity relating the Euler characteristics of an elliptically fibered Calabi-Yau fourfold and of certain related surfaces. After giving a very sketchy idea of the physics arguments leading to this identity, I will present a Chern class identity which confirms it, generalizing it to arbitrary dimension and to varieties that are not necessarily Calabi-Yaus. The relevant loci are singular, and this plays a key role in the identity.

**Category**: Applied Math and Analysis**Duration**: 01:34:44**Date**: April 2, 2008 at 4:25 PM**Views**: 156-
**Tags:**seminar, Applied Math And Analysis Seminar

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