New posts in Quasicoherent Sheaves

Two definitions of $\mathcal{O}_{\mathbb{P}^{n}}(l)$

Hartshorne Lemma II.5.3 Proof

Why isn't every $\mathcal O_X$-module quasi-coherent?

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