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Search: MSC category 54H15 ( Transformation groups and semigroups [See also 20M20, 22-XX, 57Sxx] )

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1. CJM 2009 (vol 62 pp. 262)

Goresky, Mark; MacPherson, Robert
On the Spectrum of the Equivariant Cohomology Ring
If an algebraic torus $T$ acts on a complex projective algebraic variety $X$, then the affine scheme $\operatorname{Spec} H^*_T(X;\mathbb C)$ associated with the equivariant cohomology is often an arrangement of linear subspaces of the vector space $H_2^T(X;\mathbb C).$ In many situations the ordinary cohomology ring of $X$ can be described in terms of this arrangement.

Categories:14L30, 54H15

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