11 citations · 14 across the 5 of their papers we have counts for
6 papers
Computation of generalized equivariant cohomologies of Kac-Moody flag varieties
Megumi Harada, Andre Henriques, Tara S. Holm
In 1998, Goresky, Kottwitz, and MacPherson showed that for certain projective varieties X equipped with an algebraic action of a complex torus T, the equivariant cohomology ring H_…
The octahedron recurrence and gl(n) crystals
Andre Henriques, Joel Kamnitzer
We study the hive model of gl(n) tensor products, following Knutson, Tao, and Woodward. We define a coboundary category where the tensor product is given by hives and where the ass…
Crystals and coboundary categories
Andre Henriques, Joel Kamnitzer
Following an idea of A. Berenstein, we define a commutor for the category of crystals of a finite dimensional complex reductive Lie algebra. We show that this endows the category o…
T-equivariant cohomology of cell complexes and the case of infinite Grassmannians
Megumi Harada, Andre Henriques, Tara Holm
In 1998, Goresky, Kottwitz, and MacPherson showed that for certain spaces X equipped with a torus action, the T-equivariant cohomology ring of X can be described by combinatorial d…
Presentations of Noneffective Orbifolds
Andre Henriques, David Metzler
It is well-known that an effective orbifold M (one for which the local stabilizer groups act effectively) can be presented as a quotient of a smooth manifold P by a locally free ac…
Orbispaces and Orbifolds from the Point of View of the Borel Construction, a new Definition
Andre Henriques
``An orbifold is a space which is locally modeled on the quotient of a vector space by a finite group.'' This sentence is so easily said or written that more than one person has mi…