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A diagrammatic approach to reflection functors
Published 20 Jun 2025 in math.RT | (2506.17070v1)
Abstract: We construct reflection functors for quiver Hecke algebras associated with arbitrary symmetrizable Kac-Moody algebras, from a higher representation-theoretic viewpoint. These functors provide a categorification of Lusztig's braid group action on the quantum group. Similar functors were recently constructed independently by Kashiwara-Kim-Oh-Park via a different approach.
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