79 citations · 171 across the 16 of their papers we have counts for
17 papers
Identities for Schur-type determinants and pfaffians
David Anderson, William Fulton
We give a simple formula for some determinants, and an analogous formula for pfaffians, both of which are polynomial identities. The second involve some expressions that interpolat…
Schubert Polynomials in Types A and C
David Anderson, William Fulton
Enriched versions of type A Schubert polynomials are constructed with coefficients in a polynomial ring in variables . Specializing these variables to recover…
Vexillary signed permutations revisited
David Anderson, William Fulton
We study the combinatorial properties of vexillary signed permutations, which are signed analogues of the vexillary permutations first considered by Lascoux and Schützenberger. We…
Chern class formulas for classical-type degeneracy loci
David Anderson, William Fulton
In previous work, we employed a geometric method of Kazarian to prove Pfaffian formulas for a certain class of degeneracy loci in types B, C, and D. Here we refine that approach to…
Degeneracy Loci, Pfaffians, and Vexillary Signed Permutations in Types B, C, and D
David Anderson, William Fulton
We define a notion of vexillary signed permutation in types B, C, and D, corresponding to natural degeneracy loci for vector bundles with symmetries of those types. We show that th…
The Picard group of
William Fulton, Martin Olsson
We compute the Picard group of the moduli stack of elliptic curves and its canonical compactification over general base schemes.