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arXiv 0707.1809math.AG
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过收敛位点II。同调

The Overconvergent Site II. Cohomology

Bernard Le Stum

摘要:

我们证明了刚性上同调可以计算为一个类似于结晶网站的网站的上同调。Berthelot设计了刚性上同调,作为结晶上同调和Monsky-Washnitzer上同调的一种普遍推广。不幸的是,与前者不同,该理论的功能性不是内置的。我们在别处定义了泛函地附加到代数簇上的“过收敛域”,并证明了在这个环域上的有限表示模的范畴等价于代数簇上的过收敛同晶范畴。我们在这里表明,他们的上同调也重合。

英文摘要:

We prove that rigid cohomology can be computed as the cohomology of a site analogous to the crystalline site. Berthelot designed rigid cohomology as a common generalization of crystalline and Monsky-Washnitzer cohomology. Unfortunately, unlike the former, the functoriality of the theory is not built-in. We defined somewhere else the "overconvergent site" which is functorially attached to an algebraic variety and proved that the category of modules of finite presentation on this ringed site is equivalent to the category of over- convergent isocrystals on the variety. We show here that their cohomology also coincides.

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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