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arXiv · 2602.22494

Subdivision and Runner Removal Theorems

Tao Qin
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Abstract

We develop a combinatorial framework for the subdivision map -- introduced by Maksimau, Mathas and Tubbenhauer -- between the KLR(W) algebras of type $A^{(1)}_{e-1}$ and type $A^{(1)}_{e}$, which provides a partial categorification of the runner removal theorems.

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Tao Qin. 2026-02-26. Subdivision and Runner Removal Theorems. https://arxiv.org/abs/2602.22494

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