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arXiv · 2608.28024

Lusztig-Vogan categories of equal rank 2

Daniel Dunmore·Anna Romanov·Victor L. Zhang
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Abstract

Lusztig-Vogan categories are categorifications of the principal block of the Lusztig-Vogan module over the Hecke algebra, which captures information about characters of irreducible admissible representations of a real reductive group. Lusztig-Vogan categories can be constructed as module categories over Soergel bimodules. In this paper, we describe the structure of the rank 2 Lusztig-Vogan categories corresponding to equal rank real groups. More precisely, we classify indecomposable objects and describe the action of generating Soergel bimodules, recovering the $W$-graph of the underlying Lusztig-Vogan module. We also provide an algorithm which completes this procedure for arbitrary finite rank Lusztig-Vogan categories, including those which do not correspond to a real reductive group.

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BibTeXRIS

Daniel Dunmore, Anna Romanov, Victor L. Zhang. 2026-08-28. Lusztig-Vogan categories of equal rank 2. https://arxiv.org/abs/2608.28024

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