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arXiv 1206.4002math.AGmath.NT
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有限域上K3曲面的Tate猜想

The Tate conjecture for K3 surfaces over finite fields

François Charles

摘要:

Artin猜想指出有限域上的超奇异K3曲面的Picard数为22。本文证明了特征p>3的域上的Artin猜想.这意味着特征p>3的有限域上K3曲面的Tate猜想。我们的结果还得到了有限域上某些全纯辛簇上因子的Tate猜想,并对特征作了一些限制。作为结果,我们证明了特征p>3的有限域上三次四重域上余维数为2的圈的Tate猜想。

英文摘要:

Artin's conjecture states that supersingular K3 surfaces over finite fields have Picard number 22. In this paper, we prove Artin's conjecture over fields of characteristic p>3. This implies Tate's conjecture for K3 surfaces over finite fields of characteristic p>3. Our results also yield the Tate conjecture for divisors on certain holomorphic symplectic varieties over finite fields, with some restrictions on the characteristic. As a consequence, we prove the Tate conjecture for cycles of codimension 2 on cubic fourfolds over finite fields of characteristic p>3.

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