New posts in algebraic-geometry

Test to determine if a polynomial has only real roots?

Tensor products commute with inductive limit

Degenerations of $\mathbb{P}^1$

Integral of wedge product of two one forms on a Riemann surface

road map to learn algebraic geometry

Double dual of torsion-free sheaves are locally free?

Details in applying the Barr-Beck monadicity theorem to Tannakian reconstruction

Equation of a line in homogenous coordinates given 2 points in affine coordinates

Equivalence of two definitions of local functors

For which complex numbers $\alpha$ and $\beta$ is it true that $\alpha^n+\beta^n$ is always an integer?

Why is the Artin-Rees lemma used here?

Showing that $M$ is free module over $(O_K \otimes_{\mathbb{Z}_p}U)$

cusp and node are not isomorphic

How to write down a non-degenerate cubic surface in P^4

Elliptic curves over Spec Z

On the $j_!$ of a sheaf

Vakil 14.2.E: $\mathcal L \cong \mathcal O_X(\mathrm{div}(s))$ for $s$ a rational section.

Hartshorne Exercise II. 3.19 (c)

arithmetic and geometric genus for a reducible plane curve

Do the singular matrices form a topological manifold