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arXiv 2108.12923math.KTmath.RAmath.RT
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代数扩张的同调性质

Homological properties of extensions of algebras

Kostiantyn Iusenko, John W. MacQuarrie

AI总结:

本文提出强投射有界扩张概念,证明左整体维数有限性、Hochschild 同调支集及大左有限维数有限性在该扩张下保持,并构造了有限相对整体维数的新扩张类,推广了 Cibils 等人的结果。

摘要:

我们考虑一类结合代数的扩张,称之为“强投射有界扩张”。我们证明左整体维数的有限性和 Hochschild 同调的支集在强投射有界扩张下得以保持,推广了 Cibils、Lanzillota、Marcos 和 Solotar 的结果。此外,我们证明大左有限维数的有限性在强投射有界扩张下也得以保持。为了构造例子,我们描述了一类新的具有有限相对整体维数的代数扩张,这可能具有独立的研究意义。这些结果同时适用于抽象代数(即无拓扑结构)和伪紧代数。

英文摘要:

We consider a class of extensions of associative algebras, which we refer to as ``strongly proj-bounded extensions''. We prove that the finiteness of the left global dimension and the support of the Hochschild homology is preserved by strongly proj-bounded extensions, generalizing results of Cibils, Lanzillota, Marcos and Solotar. Moreover, we show that the finiteness of the big left finitistic dimension is preserved by strongly proj-bounded extensions. In order to construct examples, we describe a new class of extensions of algebras of finite relative global dimension, which may be of independent interest. The results apply both for abstract (meaning no topology) and pseudocompact algebras.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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