New posts in Schemes

Residue fields of schemes of finite type (over $\mathbb{Z}$)

$f:X\rightarrow Y$ is a closed immersion iff $f:f^{-1}(U_i)\rightarrow U_i$ is a closed immersion.

What does the case of $\operatorname{Spec}C^{\infty}(M)$ tell us about the relavance of scheme theory to general rings?

What *is* affine space?

Hartshorne generically finite morphisms (II, 3.7)

How is the notion of adjunction of two functors usefull?

Isomorphism of Proj schemes of graded rings, Hartshorne 2.14

Irreducible closed subsets of a scheme corresponds to points

When is the pushforward of a quasi-coherent sheaf quasi-coherent? Hartshorne proof

Functor of points and category theory