# Relationship Between Mullineux Involution and the Generalized Regularization

## TL;DR

This paper explores the relationship between the Mullineux involution and generalized regularization on partitions, establishing conditions for their equivalence and connecting these concepts to algebraic structures like Iwahori-Hecke algebras.

## Contribution

It generalizes previous work by characterizing when the Mullineux transpose map coincides with the generalized column regularization, linking combinatorics to algebraic representations.

## Key findings

- Identifies conditions where Mullineux transpose equals generalized column regularization.
- Connects combinatorial maps to Iwahori-Hecke algebra and crystal basis theory.
- Proposes conjectures on q-decomposition numbers and further generalizations.

## Abstract

The Mullineux involution is an important map on $p$-regular partitions that originates from the modular representation theory of $\mathcal{S}_n$. In this paper we study the Mullineux transpose map and the generalized column regularization and prove a condition under which the two maps are exactly the same. Our results generalize the work of Bessenrodt, Olsson and Xu, and the combinatorial constructions is related to the Iwahori-Hecke algebra and the global crystal basis of the basic $U_q(\widehat{\mathfrak{sl}}_b)$-module. In the conclusion, we provide several conjectures regarding the $q$-decomposition numbers and generalizations of results due to Fayers.