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arXiv 1406.6804math.CTmath.FA
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关于Palamodov意义下的半阿贝尔范畴

On the notion of a semi-abelian category in the sense of Palamodov

Yaroslav Kopylov, Sven-Ake Wegner

摘要:

在Palamodov的意义下,一个Preabel范畴是半Abel范畴,如果对于每个态射,其核的上核与其上核的核之间的自然态射同时是单态射和满态射。在这篇文章中,我们提出了几个条件,都是等价于半阿贝尔。首先,我们考虑左和右半阿贝尔范畴在Rump的意义下,并建立这些概念的特征通过六个等价性质。然后利用这些性质推导出半阿贝尔性的刻画。最后,我们调查了两个例子中出现的泛函分析,这表明,右和左半阿贝尔范畴的概念是不同的,特别是这种类别发生在自然界中。

英文摘要:

In the sense of Palamodov, a preabelian category is semi-abelian if for every morphism the natural morphism between the cokernel of its kernel and the kernel of its cokernel is simultaneously a monomorphism and an epimorphism. In this article we present several conditions which are all equivalent to semi-abelianity. First we consider left and right semi-abelian categories in the sense of Rump and establish characterizations of these notions via six equivalent properties. Then we use these properties to deduce the characterization of semi-abelianity. Finally, we investigate two examples arising in functional analysis which illustrate that the notions of right and left semi-abelian categories are distinct and in particular that such categories occur in nature.

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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