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arXiv 0706.2648math.AGmath.CT
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Harder-Narasimhan范畴

Harder-Narasimhan categories

Huayi Chen

摘要:

本文提出了Quillen正合范畴的一个推广--算术正合范畴,并讨论了在这类范畴上可以建立Harder-Narasimhan滤子和Harder-Narasimhan多边形概念的条件.此外,我们还证明了Harder-Narasimhan过滤(索引为$\mathbb R$)的功能性,这在Harder和Narasimhan的形式主义的经典设置中是无法表述的。

英文摘要:

We propose a generalization of Quillen's exact category -- arithmetic exact category and we discuss conditions on such categories under which one can establish the notion of Harder-Narasimhan filtrations and Harder-Narsimhan polygons. Furthermore, we show the functoriality of Harder-Narasimhan filtrations (indexed by $\mathbb R$), which can not be stated in the classical setting of Harder and Narasimhan's formalism.

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