Hall--Littlewood expansions of chromatic quasisymmetric polynomials using linked rook placements

Fuente: arXiv
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Autori principali: Kim, Jang Soo, Lee, Seung Jin, Yoo, Meesue
Natura: Preprint
Pubblicazione: 2025
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author Kim, Jang Soo
Lee, Seung Jin
Yoo, Meesue
author_facet Kim, Jang Soo
Lee, Seung Jin
Yoo, Meesue
contents In this work, we obtain a Hall--Littlewood expansion of the chromatic quasisymmetric function arising from a natural unit interval order and describe the coefficients in terms of linked rook placements. Applying the Carlsson--Mellit relation between chromatic quasisymmetric functions and unicellular LLT polynomials, we also obtain a combinatorial description for the coefficients of the unicellular LLT polynomials expanded in terms of the modified transformed Hall--Littlewood polynomials.
format Preprint
id arxiv_https___arxiv_org_abs_2506_23082
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Hall--Littlewood expansions of chromatic quasisymmetric polynomials using linked rook placements
Kim, Jang Soo
Lee, Seung Jin
Yoo, Meesue
Combinatorics
Primary: 05A15, Secondary: 05A30
In this work, we obtain a Hall--Littlewood expansion of the chromatic quasisymmetric function arising from a natural unit interval order and describe the coefficients in terms of linked rook placements. Applying the Carlsson--Mellit relation between chromatic quasisymmetric functions and unicellular LLT polynomials, we also obtain a combinatorial description for the coefficients of the unicellular LLT polynomials expanded in terms of the modified transformed Hall--Littlewood polynomials.
title Hall--Littlewood expansions of chromatic quasisymmetric polynomials using linked rook placements
topic Combinatorics
Primary: 05A15, Secondary: 05A30
url https://arxiv.org/abs/2506.23082