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arXiv · 2403.19814

Endomorphism Algebras of Equivariant Exceptional Collections

Andreas Krug·Erik Nikolov
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Abstract

Given an action of a finite group on a triangulated category with a suitable strong exceptional collection, a construction of Elagin produces an associated strong exceptional collection on the equivariant category. We prove that the endomorphism algebra of the induced exceptional collection is the basic reduction of the skew group algebra of the endomorphism algebra of the original exceptional collection.

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Andreas Krug, Erik Nikolov. 2024-03-28. Endomorphism Algebras of Equivariant Exceptional Collections. https://arxiv.org/abs/2403.19814

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