Formality of equivariant intersection cohomology

Details Formality of equivariant intersection cohomology Formality of equivariant intersection cohomology

2001-01-23

arxiv.org/abs/math/0101189v2

Mathematics

Algebraic Geometry

6 pages, AMS-TeX, paper reorganized, some new remarks

Scientific paper

We present several approaches to equivariant intersection cohomology. We show
that for a complete algebraic variety acted by a connected algebraic group $G$
it is a free module over $H^*(BG)$. The result follows from the decomposition
theorem or from a weight argument.

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