Affine morphism
= Affine morphism
{wiki}
A morphism $f:X\to Y$ is affine when the inverse image of every affine open subscheme of $Y$ is affine. For a <quasi-coherent sheaf> $\mathcal F$ on $X$, one has $R^qf_*\mathcal F=0$ for $q>0$.
= Affine morphism
{wiki}
A morphism $f:X\to Y$ is affine when the inverse image of every affine open subscheme of $Y$ is affine. For a <quasi-coherent sheaf> $\mathcal F$ on $X$, one has $R^qf_*\mathcal F=0$ for $q>0$.