155 citations · 525 across the 43 of their papers we have counts for
6 papers · 1 filter
Hurwitz numbers for reflection groups I: Generatingfunctionology
Theo Douvropoulos, Joel Brewster Lewis, Alejandro H. Morales
The classical Hurwitz numbers count the fixed-length transitive transposition factorizations of a permutation, with a remarkable product formula for the case of minimum length (gen…
Hook formulas for skew shapes IV. Increasing tableaux and factorial Grothendieck polynomials
Alejandro H. Morales, Igor Pak, Greta Panova
We present a new family of hook-length formulas for the number of standard increasing tableaux which arise in the study of factorial Grothendieck polynomials. In the case of straig…
Column convex matrices, -cyclic orders, and flow polytopes
Rafael S. González D'León, Christopher R. H. Hanusa, Alejandro H. Morales +1
We study polytopes defined by inequalities of the form for and nonnegative where the inequalities can be reordered into a matrix…
Chromatic symmetric functions of Dyck paths and q-rook theory
Laura Colmenarejo, Alejandro H. Morales, Greta Panova
The chromatic symmetric function (CSF) of Dyck paths of Stanley and its Shareshian-Wachs -analogue have important connections to Hessenberg varieties, diagonal harmonics and LLT…
Bijecting hidden symmetries for skew staircase shapes
Zachary Hamaker, Alejandro H. Morales, Igor Pak +2
We present a bijection between the set of standard Young tableaux of staircase minus rectangle shape, and the set of marked shifted standard Young tableaux of a certain shifted sha…
Refinements and Symmetries of the Morris identity for volumes of flow polytopes
Alejandro H. Morales, William Shi
Flow polytopes are an important class of polytopes in combinatorics whose lattice points and volumes have interesting properties and relations. The Chan-Robbins-Yuen (CRY) polytope…