The cycle-class form of the Tate conjecture

Let F=Fq\mathbf{F}=\mathbf{F}_q be a finite field, let XX be a smooth projective variety over F\mathbf{F}, let Xˉ=X×FF\bar X=X\times_{\mathbf{F}}\overline{\mathbf{F}}, and let G=Gal(F/F)G=\operatorname{Gal}(\overline{\mathbf{F}}/\mathbf{F}). For n0n\geq 0, write CHn(X)CH^n(X) for codimension-nn cycles modulo rational equivalence. The cycle-class form of the Tate conjecture. The cycle class map

CHn(X)QlH2n(Xˉ,Ql(n))GCH^n(X)\otimes\mathbf{Q}_l\longrightarrow H^{2n}(\bar X,\mathbf{Q}_l(n))^G

is bijective for every n0n\geq 0. The text derives this by combining the cohomological Tate conjecture with Beilinson's conjecture; it gives no resolution status for the combined statement.

Sources & referencesView supporting material

Primary source

Bruno Kahn, “The full faithfulness conjectures in characteristic p”, arXiv:1209.4322 (2012).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.