All Questions

Janelidze's categorical Galois theory yields, for nice adjunctions, a good notion of covering morphism. The category of finitely affine schemes admits such an adjunction into the category of ...

Let $V$ be an algebraic variety over a field $K$. Is there a constant $d = d(V) \in \mathbb{N}$ such that for any variety $W$ defined over $K$ and isomorphic to $V$ over the algebraic closure of $K$, ...