From moment graphs to intersection cohomology

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We describe a method of computing equivariant and ordinary intersection cohomology of certain varieties with actions of algebraic tori, in terms of structure of the zero- and one-dimensional orbits. The class of varieties to which our formula applies includes Schubert varieties in flag varieties and affine flag varieties. We also prove a monotonicity result on local intersection cohomology stalks.
20 pages, 1 figure

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Algebraic Geometry, 32S60 (Primary) 15M15, 58K70 (Secondary)

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http://salesiana.dossiersoluciones.com/handle/123456789/59802

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0008200
 http://arxiv.org/abs/math/0008200

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arXiv