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arXiv 2009.09356math.RTmath.RA
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双模诱导的奇异等价与二次单项式代数

Singular equivalences induced by bimodules and quadratic monomial algebras

Xiao-Wu Chen, Jian Liu, Ren Wang

AI总结:

本文研究双模张量函子诱导奇异等价的条件,并构造显式双模以建立二次单项式代数与根平方零相关代数之间的带层级奇异等价。

摘要:

我们研究何时由双模给出的张量函子会产生奇异等价这一问题。结果表明,该问题等价于:何时由同一双模给出的 Hom 函子,在投射内射模的无环复形的同伦范畴之间诱导三角等价。我们给出了一个双模何时出现在某对双模中的条件,这对双模定义了一个带层级的奇异等价。我们构造了一个显式双模,它在二次单项式代数与其相关的根平方零代数之间产生奇异等价。在包括 Gorenstein 情形在内的某些条件下,该双模确实出现在定义带层级奇异等价的一对双模中。

英文摘要:

We investigate the problem when the tensor functor by a bimodule yields a singular equivalence. It turns out that this problem is equivalent to the one when the Hom functor given by the same bimodule induces a triangle equivalence between the homotopy categories of acyclic complexes of injective modules. We give conditions on when a bimodule appears in a pair of bimodules, that defines a singular equivalence with level. We construct an explicit bimodule, which yields a singular equivalence between a quadratic monomial algebra and its associated algebra with radical square zero. Under certain conditions which include the Gorenstein cases, the bimodule does appear in a pair of bimodules defining a singular equivalence with level.

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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