Abstract
We introduce the notion of –filtrable varieties: projective varieties with a torus action and a finite number of fixed points, such that the cells of the associated Bialynicki-Birula decomposition are all rationally smooth. Our main results develop GKM theory in this setting. We also supply a method for building nice combinatorial bases on the equivariant cohomology of any –filtrable GKM variety. Applications to the theory of group embeddings are provided.
Citation
Richard Gonzales. "Rational smoothness, cellular decompositions and GKM theory." Geom. Topol. 18 (1) 291 - 326, 2014. https://doi.org/10.2140/gt.2014.18.291
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