Thom form in equivariant Cech-de Rham theory

Ko Fujisawa

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arXiv · 1706.03238

Thom form in equivariant Cech-de Rham theory

Ko Fujisawa

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Abstract

In the present paper, we provide the foundation of a $G$-equivariant Cech-de Rham theory for a compact Lie group $G$ by using the Cartan model of equivariant differential forms. Our approach is quite elementary without referring to the Mathai-Quillen framework. In particular, by a direct computation, we give an explicit formula of the $U(l)$-equivariant Thom form of C^l, which deforms the classical Bochnor-Martinelli kernel. Also we discuss a version of equivariant Riemann-Roch formula.

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Ko Fujisawa. 2017-06-10. Thom form in equivariant Cech-de Rham theory. https://arxiv.org/abs/1706.03238

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