A Duality Theorem for Étale p-Torsion Sheaves on Complete Varieties over a Finite Field
A Duality Theorem for Étale p-Torsion Sheaves on Complete Varieties over a Finite Field
复制标题
有限域上完全变量上Étale p扭力滑轮的对偶定理
DOI:
10.1023/a:1000892524712
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发表时间:
1999
影响因子:
1.8
通讯作者:
T. Moser
中科院分区:
文献类型:
--
作者:
T. Moser
Let X be an arbitrary variety over a finite field k and p=char k,n∈ N. We will construct a complex of étale sheaves on X together with trace isomorphism from the highest étale cohomology group of this complex onto Z/pnZ such that for every constructible Z/pnZ-sheaf on X the Yoneda pairing is a nondegenerate pairing of finite groups. If X is smooth, this complex is the Gersten resolution of the logarithmic de Rham–Witt sheaf introduced by Gros and Suwa. The proof is based on the special case proven by Milne when the sheaf is constant and X is smooth, as well as on a purity theorem which in turn follows from a theorem about the cohomological dimension of Ci-fields due to Kato and Kuzumaki. If the existence of the Lichtenbaum complex is proven, the theorem will be the p-part of a general duality theorem for varieties over finite fields.