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Abstract: For a smooth complex algebraic variety $X$ with a suitably nice action of
a torus, the equivariant and ordinary cohomology rings can be
read off from the zero and one-dimensional orbits, which in turn can
be described by its image under the moment map, a graph linearly
embedded in $R^d$ . If $X$ is
singular, we can hope to calculate the equivariant intersection
homology from similar moment map geometry. We give such a description
for the case when $X$ is a Schubert variety in the SL(n) flag
manifold. (Joint work with Robert MacPherson)
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