New posts in algebraic-geometry

Fiber of a map between spectra

Is $\operatorname{Gal}(\mathbb{Q}_p^{un})\cong \hat{\mathbb{Z}}$?

How to tell if algebraic set is a variety?

Geometric intuition for flat morphisms

Hartshorne's Exercise II.4.5(c). A third time.

$K[X^2,X^3]\subset K[X]$ is a Noetherian domain and all its prime ideals are maximal

Position and nature of singularities of an algebraic function (Ahlfors)

Bott periodicity and algebraic geometry

Why are projective morphisms closed?

Normal bundle of a section of a $\mathbb{P}^1$-bundle

Normal bundle of a section of a projective bundle

What are the conditions for a polygon to be tessellated?

Underlying set of the scheme theoretic fiber

Hartshorne II prop 6.6

Divisors in an abelian surface

Relations of Characteristic classes: Chern, Stiefel-Whitney, Pontryagin, Euler, Wu class. [closed]

Is a bijective morphism of quasi-affine smooth varieties an isomorphism?

The case of Captain America's shield: a variation of Alhazen's Billard problem

Hartshorne Exercise 1.1 (a)

Is the ring of p-adic integers of finite type over the ring of integers?