30 citations · 71 across the 13 of their papers we have counts for
14 papers
Tangent spaces and T-invariant curves of Schubert varieties
William Graham, Victor Kreiman
The set of T-invariant curves in a Schubert variety through a T-fixed point is relatively easy to characterize in terms of its weights, but the tangent space is more difficult. We…
Equivariant K-theory and tangent spaces to Schubert varieties
William Graham, Victor Kreiman
Tangent spaces to Schubert varieties of type A were characterized by Lakshmibai and Seshadri. This result was extended to the other classical types by Lakshmibai. We give a uniform…
Cominuscule points and Schubert varieties
William Graham, Victor Kreiman
We introduce the notion of a cominuscule point in a Schubert variety in a generalized flag variety for a semisimple group. We derive formulas expressing the Hilbert series and mult…
Excited Young diagrams, equivariant K-theory, and Schubert varieties
William Graham, Victor Kreiman
We give combinatorial descriptions of the restrictions to T-fixed points of the classes of structure sheaves of Schubert varieties in the T-equivariant K-theory of Grassmannians an…
Products of Factorial Schur Functions
V. Kreiman
The product of any finite number of factorial Schur functions can be expanded as a -linear combination of Schur functions. We give a rule for computing the coefficients in su…
Equivariant Littlewood-Richardson Skew Tableaux
V. Kreiman
We give a positive equivariant Littlewood-Richardson rule also discovered independently by Molev. Our proof generalizes a proof by Stembridge of the ordinary Littlewood-Richardson…