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Chern classes of proalgebraic varieties and motivic measures

Shoji Yokura
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Abstract

Michael Gromov has recently initiated what he calls ``symbolic algebraic geometry", in which objects are proalgebraic varieties: a proalgebraic variety is by definition the projective limit of a projective system of algebraic varieties. In this paper we construct Chern--Schwartz--MacPherson classes of proalgebraic varieties, by introducing the notion of ``proconstructible functions " and "$χ$-stable proconstructible functions" and using the Fulton-MacPherson's Bivariant Theory. As a "motivic" version of a $χ$-stable proconstructible function, $\Ga$-stable constructible functions are introduced. This construction naturally generalizes the so-called motivic measure and motivic integration. For the Nash arc space $\Cal L(X)$ of an algebraic variety $X$, the proconstructible set is equivalent to the so-called cylinder set or constructible set in the arc space.

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Shoji Yokura. 2004-07-14. Chern classes of proalgebraic varieties and motivic measures. https://arxiv.org/abs/math/0407237

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