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arXiv 1707.05040math.RTmath.CTmath.RA
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环的Gorenstein同调代数与李超代数

Gorenstein homological algebra for rngs and Lie superalgebras

Kevin Coulembier

摘要:

我们推广的概念Gorenstein同调代数的环的任意阿贝尔范畴。对于具有足够幂等元的rng的模范畴,结果是最强的。我们还重新制定的概念Frobenius扩展的诺特环到一个设置,允许直接推广到任意的阿贝尔范畴。然后将抽象理论应用于李超代数的BGG范畴O,现在可以将其视为底层李代数的相应范畴的“Frobenius扩展”,因此是“Gorenstein”。特别是我们获得了新的和更一般的公式的塞尔函子和煽动理论的Gorenstein扩展群。

英文摘要:

We generalise notions of Gorenstein homological algebra for rings to the context of arbitrary abelian categories. The results are strongest for module categories of rngs with enough idempotents. We also reformulate the notion of Frobenius extensions of noetherian rings into a setting which allows for direct generalisation to arbitrary abelian categories. The abstract theory is then applied to the BGG category O for Lie superalgebras, which can now be seen as a "Frobenius extension" of the corresponding category for the underlying Lie algebra and is therefore "Gorenstein". In particular we obtain new and more general formulae for the Serre functors and instigate the theory of Gorenstein extension groups.

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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