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Index formula for MacPherson cycles of affine algebraic varieties

Joerg Schuermann·Mihai Tibar
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Abstract

We give explicit MacPherson cycles for the Chern-MacPherson class of a closed affine algebraic variety $X$ and for any constructible function $α$ with respect to a complex algebraic Whitney stratification of $X$. We define generalized degrees of the global polar varieties and of the MacPherson cycles and we prove a global index formula for the Euler characteristic of $α$. Whenever $α$ is the Euler obstruction of $X$, this index formula specializes to the Seade-Tibar-Verjovsky global counterpart of the Le-Teissier formula for the local Euler obstruction.

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Joerg Schuermann, Mihai Tibar. 2009-08-25. Index formula for MacPherson cycles of affine algebraic varieties. https://arxiv.org/abs/math/0603338

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