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An extension of algebras is a homomorphism of algebras preserving identities. We use extensions of algebras to study the finitistic dimension conjecture over Artin algebras. Let $f: B \to A$ be an extension of Artin algebras. We denote by…

环与代数 · 数学 2018-03-01 Shufeng Guo

Let $A$ be an Artin algebra. We investigate subalgebras of $A$ with certain conditions and obtain some classes of algebras whose finitistic dimensions are finite.

表示论 · 数学 2013-01-29 Aiping Zhang , Shunhua Zhang

The finitistic dimension conjecture asserts that any finite-dimensional algebra over a field should have finite finitistic dimension. Recently, this conjecture is reduced to studying finitistic dimensions for extensions of algebras. In this…

表示论 · 数学 2018-05-01 Chengxi Wang , Changchang Xi

It is shown that the derived dimension of any representation-finite Artin algebra is at most one.

表示论 · 数学 2009-09-03 Yang Han

Let $\Lambda$ be an artin algebra. We obtain that $\Lambda$ is syzygy-finite when the radical layer length of $\Lambda$ is at most two; as two consequences, we give a new upper bound for the dimension of the bounded derived category of the…

表示论 · 数学 2021-05-11 Junling Zheng

We prove that the finitistic dimension conjecture, the Gorenstein Symmetry Conjecture, the Wakamatsu-tilting conjecture and the generalized Nakayama conjecture hold for artin algebras which can be realized as endomorphism algebras of…

表示论 · 数学 2008-04-14 Jiaqun Wei

In \cite{SSZ}, the authors proved that an Artin algebra $A$ with infinite global dimension has an indecomposable module with infinite projective and infinite injective dimension, giving a new characterisation of algebras with finite global…

表示论 · 数学 2017-12-21 Rene Marczinzik

In this survey we discuss the results on the finitistic dimension of various stratified algebras. We describe what is already known, present some recent estimates, and list some open problems.

表示论 · 数学 2010-04-02 Volodymyr Mazorchuk

Over a right-noetherian algebra admitting a dualizing complex, any left-module with finite flat dimension also has finite projective dimension.

环与代数 · 数学 2007-05-23 Peter Jorgensen

We introduce the notion of radical preservation and prove that a radical-preserving homomorphism of left artinian rings of finite projective dimension with superfluous kernel reflects the finiteness of the little finitistic, big finitistic…

表示论 · 数学 2025-08-01 Odysseas Giatagantzidis

For monomial special multiserial algebras, which in general are of wild representation type, we construct radical embeddings into algebras of finite representation type. As a consequence, we show that the representation dimension of…

表示论 · 数学 2017-11-10 Sibylle Schroll

Given a representation-finite algebra B and a subalgebra A of B such that the Jacobson radicals of A and B coincide, we prove that the representation dimension of A is at most three. By a result of Igusa and Todorov, this implies that the…

表示论 · 数学 2007-05-23 Karin Erdmann , Thorsten Holm , Osamu Iyama , Jan Schröer

We consider selfinjective Artin algebras whose cohomology groups are finitely generated over a central ring of cohomology operators. For such an algebra, we show that the representation dimension is strictly greater than the maximal…

表示论 · 数学 2007-11-20 Petter Andreas Bergh

It is shown that over an arbitrary countable field, there exists a finitely generated algebra that is nil, infinite dimensional, and has Gelfand-Kirillov dimension at most three.

环与代数 · 数学 2010-08-27 T H Lenagan , Agata Smoktunowicz , Alexander Young

We prove that if $B\subseteq A$ is an extension of finite dimensional algebras such that the projective dimension of $A/B$ as a $B$-bimodule is finite, if $A$ has finite finitistic dimension, then so does $B$. We exhibit examples…

表示论 · 数学 2023-06-06 John William MacQuarrie , Fernando dos Reis Naves

In 2005, the second author and Todorov introduced an upper bound on the finitistic dimension of an Artin algebra, now known as the {\phi}-dimension. The {\phi}-dimension conjecture states that this upper bound is always finite, a fact that…

表示论 · 数学 2022-08-25 Eric J. Hanson , Kiyoshi Igusa

We conjecture that the injective dimension of the Jacobson radical equals the global dimension for Artin algebras. We provide a proof of this conjecture in case the Artin algebra has finite global dimension and in some other cases.

表示论 · 数学 2018-01-18 Rene Marczinzik

The finitistic dimension of a triangulated category is introduced. For the category of perfect complexes over a ring it is shown that this dimension is finite if and only if the small finitistic dimension of the ring is finite.

范畴论 · 数学 2024-09-04 Henning Krause

We show that the finitistic dimension conjecture holds for all finite dimensional algebras if and only if, for all finite dimensional algebras, the finitistic dimension of an algebra being finite implies that the finitistic dimension of its…

表示论 · 数学 2024-03-06 Charley Cummings

We prove the result in the title. We infer, that unlike cylindric algebras, there is a first order axiomatization of the class of completely representable polyadic algebras of infinite dimension, though the one we obtain is infinite; in…

逻辑 · 数学 2013-06-07 Tarek Sayed Ahmed
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