William Graham

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math.AG2024

Positivity in Weighted Flag Varieties

William Graham, Scott Joseph Larson

We study the torus-equivariant cohomology of weighted flag varieties, and prove a positivity property in the equivariant cohomology and Chow groups of weighted flag varieties, anal…

math.AG2024

Singular loci of Schubert varieties and the Lookup Conjecture in type $A ~_{2}$

Brian D. Boe, William Graham

We describe the loci of non-rationally smooth (nrs) points and of singular points for any non-spiral Schubert variety of $A ~_{2}$ in terms of the geometry of the (affine) Weyl…

Positivity in Weighted Flag Varieties

Singular loci of Schubert varieties and the Lookup Conjecture in type A~2​

Singular loci of Schubert varieties and the Lookup Conjecture in type $A ~_{2}$