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Higher-dimensional Auslander–Reiten theory on (d+2)-angulated categories

Part of: Representation theory of rings and algebras

Published online by Cambridge University Press:  27 October 2021

Panyue Zhou Open the ORCID record for Panyue Zhou [Opens in a new window]
Panyue Zhou*
Affiliation:
College of Mathematics, Hunan Institute of Science and Technology, 414006 Yueyang, Hunan, P. R. China e-mail: [email protected]
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Abstract

Let $\mathscr{C}$ be a $(d+2)$ -angulated category with d-suspension functor $\Sigma^d$ . Our main results show that every Serre functor on $\mathscr{C}$ is a $(d+2)$ -angulated functor. We also show that $\mathscr{C}$ has a Serre functor $\mathbb{S}$ if and only if $\mathscr{C}$ has Auslander–Reiten $(d+2)$ -angles. Moreover, $\tau_d=\mathbb{S}\Sigma^{-d}$ where $\tau_d$ is d-Auslander–Reiten translation. These results generalize work by Bondal–Kapranov and Reiten–Van den Bergh. As an application, we prove that for a strongly functorially finite subcategory $\mathscr{X}$ of $\mathscr{C}$ , the quotient category $\mathscr{C}/\mathscr{X}$ is a $(d+2)$ -angulated category if and only if $(\mathscr{C},\mathscr{C})$ is an $\mathscr{X}$ -mutation pair, and if and only if $\tau_d\mathscr{X} =\mathscr{X}$ .

Keywords

triangulated categories(d+2)-angulated categoriesAuslander-Reiten (d+2)-anglesSerre functor

MSC classification

Primary: 16G70: Auslander-Reiten sequences (almost split sequences) and Auslander-Reiten quivers
Type
Research Article
Information
Glasgow Mathematical Journal , Volume 64 , Issue 3 , September 2022 , pp. 527 - 547
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of Glasgow Mathematical Journal Trust

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Footnotes

This work was supported by the Scientific Research Fund of Hunan Provincial Education Department (Grant No. 19B239) and the National Natural Science Foundation of China (Grant No. 11901190).

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