On the Auslander--Reiten Theory for Extended Hearts of Proper Connective DG Algebras

Fuente: arXiv
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Autori principali: Mochizuki, Nao, Plogmann, Marvin
Natura: Preprint
Pubblicazione: 2025
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author Mochizuki, Nao
Plogmann, Marvin
author_facet Mochizuki, Nao
Plogmann, Marvin
contents We prove that, for a proper connective dg algebra $A$ with cohomology concentrated in degrees between $1-d$ and $0$, the extended heart $\mathcal{D}^{fd}(A)^{(-d,0]}\subseteq \mathcal{D}^{fd}(A)$ is an extriangulated category with almost-split conflations. We also prove a version of the 1st Brauer--Thrall Conjecture in this context.
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id arxiv_https___arxiv_org_abs_2505_16560
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the Auslander--Reiten Theory for Extended Hearts of Proper Connective DG Algebras
Mochizuki, Nao
Plogmann, Marvin
Representation Theory
Primary: 18G80. Secondary: 16E45, 16G70
We prove that, for a proper connective dg algebra $A$ with cohomology concentrated in degrees between $1-d$ and $0$, the extended heart $\mathcal{D}^{fd}(A)^{(-d,0]}\subseteq \mathcal{D}^{fd}(A)$ is an extriangulated category with almost-split conflations. We also prove a version of the 1st Brauer--Thrall Conjecture in this context.
title On the Auslander--Reiten Theory for Extended Hearts of Proper Connective DG Algebras
topic Representation Theory
Primary: 18G80. Secondary: 16E45, 16G70
url https://arxiv.org/abs/2505.16560