Abstract
Given the pair of a dualizing k-variety and its functorially finite subcategory, we show that there exists a recollement consisting of their functor categories of finitely presented objects. We provide several applications for Auslander’s formulas: the first one realizes a module category as a Serre quotient of a suitable functor category. The second one shows a close connection between Auslander–Bridger sequences and recollements. The third one gives a new proof of the higher defect formula which includes the higher Auslander–Reiten duality as a special case.
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Acknowledgements
First and foremost, I would like to express my gratitude to my supervisors Kiriko Kato and Osamu Iyama, who gave me so many helpful suggestions and discussions. I am also grateful to Takahide Adachi for his valuable comments and advice.
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Henning Krause.
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Ogawa, Y. Recollements for Dualizing k-Varieties and Auslander’s Formulas. Appl Categor Struct 27, 125–143 (2019). https://doi.org/10.1007/s10485-018-9546-y
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DOI: https://doi.org/10.1007/s10485-018-9546-y