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arXiv · 2502.14319

Crystal Structure of Localized Quantum Unipotent Coordinate Category

Masaki Kashiwara·Toshiki Nakashima
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Abstract

A localized quantum unipotent coordinate category $\widetilde{\mathscr{C}_w}$ associated with a Weyl group element $w$ is a rigid monoidal category which is obtained by applying the localization process to a subcategory of the category of finite-dimensional graded modules of a quiver Hecke algebra. We shall show that the family of the isomorphism classes (up to grading shifts) of simple objects in $\widetilde{\mathscr{C}_w}$ possesses a crystal structure and it is isomorphic to the cellular crystal associated with $w$. As an application of this result, we shall show the connectedness of the crystal graph of an arbitrary cellular crystal.

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BibTeXRIS

Masaki Kashiwara, Toshiki Nakashima. 2025-02-20. Crystal Structure of Localized Quantum Unipotent Coordinate Category. https://arxiv.org/abs/2502.14319

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