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arXiv 1307.1995math.AGmath.CTmath.NT
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代数曲面上的非交换互易律:Tame分歧的一个例子

Noncommutative reciprocity laws on algebraic surfaces: a case of tame ramification

D. V. Osipov

摘要:

证明了定义在完满域上的代数曲面上的非交换互易律。这些互反律要求整体构造群的中心扩张在由曲面上的点或射影曲线构造的子群上的分裂。对于具有有限个末剩余域的二维局部域,所构造的局部中心扩张同构于M.卡普拉诺夫

英文摘要:

We prove non-commutative reciprocity laws on an algebraic surface defined over a perfect field. These reciprocity laws claim the splittings of some central extensions of globally constructed groups over some subgroups constructed by points or projective curves on a surface. For a two-dimensional local field with a finite last residue field the constructed local central extension is isomorphic to a central extension which comes from the case of tame ramification of the Abelian two-dimensional local Langlands correspondence suggested by M. Kapranov.

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