Tate's numerical-cycles conjecture for varieties over finite fields

Let VV be a smooth projective variety over Fq\mathbb{F}_q, let r0r\geq 0, and let Ar(V)A^r(V) be the quotient of the space of algebraic cycles of codimension rr on VV by the subspace of cycles numerically equivalent to 00. Let ζ(V,s)\zeta(V,s) denote the zeta function of VV. Tate conjecture. For all smooth projective varieties over Fq\mathbb{F}_q and r0r\geq 0, the dimension of Ar(V)A^r(V) is equal to the order of the pole of ζ(V,s)\zeta(V,s) at s=rs=r. The paper explicitly says that the section assumes the full Tate conjecture, but the supplied material gives no resolution status for this formulation.

Sources & referencesView supporting material

Primary source

Sergei Iakovenko, “Representations of the Kottwitz gerbes”, arXiv:2205.06510 (2022).

Additional references

2 papers in this index state this conjecture (2007–2022). The statement above is taken from the most recent of them; the others are arXiv:0709.3040.

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