2017
DOI: 10.2140/pjm.2017.289.449
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Cluster tilting modules and noncommutative projective schemes

Abstract: In this paper, we study the relationship between equivalences of noncommutative projective schemes and cluster tilting modules. In particular, we prove the following result. Let $A$ be an AS-Gorenstein algebra of dimension $d\geq 2$ and ${\mathsf{tails}\,} A$ the noncommutative projective scheme associated to $A$. If $\operatorname{gldim}({\mathsf{tails}\,} A)< \infty$ and $A$ has a $(d-1)$-cluster tilting module $X$ satisfying that its graded endomorphism algebra is $\mathbb N$-graded, then the graded endomor… Show more

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Cited by 5 publications
(2 citation statements)
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“…Condition (b) of Theorem 5.2 was also shown by Minamoto-Mori to be a consequence of their definition of AS regularity over in [33, Proposition 3.5]; our theorem gives another proof of this. We also note that there is a notion of ASF-regular algebra in [33], defined in terms of graded local cohomology, which Ueyama recently showed [46, Corollary 2.11] to be equivalent for noetherian algebras A to the condition of being AS regular over . It seems possible that a suitable “invertible bimodule twist” of this property could be equivalent to the generalized AS regular property, at least for noetherian algebras, but we do not pursue that possibility here.…”
Section: As Regularity For Locally Finite Algebrasmentioning
confidence: 99%
“…Condition (b) of Theorem 5.2 was also shown by Minamoto-Mori to be a consequence of their definition of AS regularity over in [33, Proposition 3.5]; our theorem gives another proof of this. We also note that there is a notion of ASF-regular algebra in [33], defined in terms of graded local cohomology, which Ueyama recently showed [46, Corollary 2.11] to be equivalent for noetherian algebras A to the condition of being AS regular over . It seems possible that a suitable “invertible bimodule twist” of this property could be equivalent to the generalized AS regular property, at least for noetherian algebras, but we do not pursue that possibility here.…”
Section: As Regularity For Locally Finite Algebrasmentioning
confidence: 99%
“…Mori and Ueyama prove that if the Auslander map is an isomorphism, then A G has a graded isolated singularity if and only if A#G/I is finite-dimensional [21,Theorem 3.10]. Examples of graded isolated singularities are of particular interest, since when A G has a graded isolated singularity, the category of graded CM A G -modules has several nice properties (see [25]).…”
Section: Casementioning
confidence: 99%