2 problems

Categoricity conjecture for étale cohomology forms. Every $\mathbb Q$-form of the étale cohomology is associated to the singular cohomology theory via a comparison isomorphism…

Categoricity conjecture for comparison isomorphisms. Up to the action of $\operatorname{Aut}(\mathbb C)$, the comparison isomorphism between singular and $l$-adic étale cohomology…