activity
20142026
most citedThe permutahedral variety, mixed Eulerian numbers, and principal specializations of Schubert polynomials

16 citations · 38 across the 29 of their papers we have counts for

collaborators

40 papers

math.CO2026

Theta operators at , Macdonald cumulants, and LLT positivity

Jim Haglund, Vasu Tewari

We study the Theta operators of D'Adderio-Iraci-Vanden Wyngaerd at and show that the power-sum-indexed operators agree with a commuting family of der…

math.AG2026

Long range divided differences, clusters, and Graham-positivity

Hunter Spink, Vasu Tewari

We study torus-orbit closures in the type complete flag variety naturally associated to cones in the positive cluster fan, together with their left -translates. The torus-…

math.AG2026

The Springer Geometry of Specht Polynomials and Schubert cycle positivity for two row Springer fiber components

Hunter Spink, Vasu Tewari

We show that the type A Springer representation is realized geometrically in the homology of the complete flag variety by Specht polynomials. For any partition, we identify the cla…

math.CO2026

Grove polynomials and -theoretic quasisymmetry

Philippe Nadeau, Hunter Spink, Vasu Tewari

We define the grove polynomials, a set-valued extension of forest polynomials. We show that they are -theoretically dual to the quasisymmetric Schubert cells which pave the quas…

math.AG2026

The Quasisymmetric Grassmannian

Nantel Bergeron, Lucas Gagnon, Hunter Spink +1

We construct a complex of toric varieties we call the quasisymmetric Grassmannian inside the Grassmannian of -planes in . Each irreducible component is a positroid…

math.AG2026

The Coxeter Flag Variety

Nantel Bergeron, Lucas Gagnon, Hunter Spink +1

For a Coxeter element in a Weyl group , we define the -Coxeter flag variety as the union of left-translated Richardson varieties $w^{-1}…