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arXiv · 2601.15426

Isotropic meta Kazhdan--Lusztig combinatorics I: Ext-quiver presentation for the Hecke category

Ben Mills
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Abstract

We provide an ${\rm Ext}$-quiver and relations presentation for the basic algebra of the anti-spherical Hecke categories of isotropic Grassmannians, $H_{(D_n, A_{n-1})}$, in terms of cup-cap meta Kazhdan--Lusztig combinatorics and Temperley--Lieb diagrammatics.

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Ben Mills. 2026-01-21. Isotropic meta Kazhdan--Lusztig combinatorics I: Ext-quiver presentation for the Hecke category. https://arxiv.org/abs/2601.15426

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