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arXiv 0905.1753math.NTmath.AG
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关于L-adic层的特征类的局部化及特征p>0的导体公式

On localizations of the characteristic classes of l-adic sheaves and conductor formula in characteristic p>0

Takahiro Tsushima

摘要:

Grothendieck-Ogg-Shafarevich公式计算曲线上l-adic层的l-adic Euler-Poincare数,通过由l-adic层的野生分支产生的不变量Swan类。A. Abbes,K. Kato和T. Saito把这个公式推广到任何维数的概型。本文在奇点的强奇点的分解的假设下,证明了A. Abbes和T. Saito使用的l-adic层的示性类。作为应用,我们证明了一个等特性线导体公式.

英文摘要:

The Grothendieck-Ogg-Shafarevich formula calculates the l-adic Euler-Poincare number of an l-adic sheaf on a curve by an invariant produced by the wild ramification of the l-adic sheaf named Swan class. A. Abbes, K. Kato and T. Saito generalize this formula to any dimensional scheme. In this paper, assuming the strong resolution of singularities we prove a localized version of a formula proved by A. Abbes and T. Saito using the characteristic class of an l-adic sheaf. As an application, we prove a conductor formula in equal characteristic.

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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