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arXiv 0811.2627math.CT
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2-范畴上的上同调理论

Cohomology theory in 2-categories

Hiroyuki Nakaoka

摘要:

最近,对称范畴群被用来研究对称幺半范畴的Brauer群.作为这些努力的一部分,一些2-范畴的对称范畴群$\mathrm{SCG}$的代数结构正在研究。在本文中,我们考虑一个阿贝尔范畴范畴的2范畴类似物,以这样的方式,它包含$\mathrm{SCG}$作为一个例子。作为一个主要定理,我们构造了一个长上同调2-正合列从任何扩张的复形在这样的2-范畴。我们的公理和自对偶定义将使我们能够简化证明,通过类比阿贝尔范畴。

英文摘要:

Recently, symmetric categorical groups are used for the study of the Brauer groups of symmetric monoidal categories. As a part of these efforts, some algebraic structures of the 2-category of symmetric categorical groups $\mathrm{SCG}$ are being investigated. In this paper, we consider a 2-categorical analogue of an abelian category, in such a way that it contains $\mathrm{SCG}$ as an example. As a main theorem, we construct a long cohomology 2-exact sequence from any extension of complexes in such a 2-category. Our axiomatic and self-dual definition will enable us to simplify the proofs, by analogy with abelian categories.

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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