Arithmetic cohomology over finite fields and special values of ζ-functions
Arithmetic cohomology over finite fields and special values of ζ-functions
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有限域上的算术上同调和 z-函数的特殊值
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发表时间:
2004
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通讯作者:
Thomas H. Geisser
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作者:
Thomas H. Geisser
We construct cohomology groups with compact support H i c(Xar, Z(n)) for separated schemes of finite type over a finite field, which generalize Lichtenbaum’s Weil-etale cohomology groups for smooth and projective schemes. In particular, if Tate’s conjecture holds, and rational and numerical equivalence agree up to torsion, then the groups H c(Xar, Z(n)) are finitely generated, form an integral model of ladic cohomology with compact support, and admit a formula for the special values of the ζ-function of X.