3 papers
math.RT2026
Classification of weak Bruhat interval modules of -Hecke algebras
Yong Liao, Han Yang, Houyi Yu
Weak Bruhat interval modules of the -Hecke algebra in type offer a unified framework for studying modules associated to quasisymmetric functions. This class of modules has r…
math.CO2025
Combinatorial equivalence of separable elements in types and
Yong Liao, Yuping Yang, Houyi Yu
We study the combinatorial equivalence of separable elements in types and . A bijection is constructed from the set of separable permutations in the symmetric group $S_{n+1}…
math.CO2025
Separable elements and splittings in Weyl groups of Type
Ming Liu, Houyi Yu
Separable elements in Weyl groups are generalizations of the well-known class of separable permutations in symmetric groups. Gaetz and Gao showed that for any pair of subse…