collaborators

3 papers

math.CO2025

Permutations with only reduced co-BPDs

Joshua Arroyo, Adam Gregory

Bumpless pipe dreams (BPDs) are combinatorial objects used in the study of Schubert and Grothendieck polynomials. Weigandt recently introduced a co-BPD object associated to each BP…

math.CO2025

Pieri Rule for GQs Computed via Strict Decomposition Tableaux

Joshua Arroyo

functions are symmetric functions indexed by strict partitions that represent -theoretic Schubert classes in the Lagrangian Grassmannian. Buch and Ravikumar proved a Pieri…

math.CO2025

Type C -Stanley symmetric functions and Kraśkiewicz-Hecke insertion

Joshua Arroyo, Zachary Hamaker, Graham Hawkes +1

We study Type C -Stanley symmetric functions, which are -theoretic extensions of the Type C Stanley symmetric functions. They are indexed by signed permutations and can be us…