Algebraic geometry

Localized Chern class

In algebraic geometry, a localized Chern class is a variant of a Chern class, that is defined for a chain complex of vector bundles as opposed to a single vector bundle. It was originally introduced in Fulton's intersection theory, as an algebraic counterpart of the similar construction in algebraic topology. The notion is used in particular in the Riemann–Roch-type theorem. S. Bloch later generalized the notion in the context of arithmetic schemes (schemes over a Dedekind domain) for the purpose of giving that computes the non-constancy of Euler characteristic of a degenerating family of algebraic varieties (in the mixed characteristic case). (Wikipedia).

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Related pages

Degeneration (algebraic geometry) | Grassmann bundle | Chern class | Riemann–Roch-type theorem | Algebraic topology