New posts in projective-module

Non-finitely generated R-module

Showing an ideal is a projective module via a split exact sequence

Characterization of projective and injective modules

Finitely generated flat modules that are not projective

If the tensor product of two modules is free of finite rank, then the modules are finitely generated and projective

Finitely generated projective module

Finitely generated projective modules are locally free

Origin of the terminology projective module

Is a finitely generated projective module a direct summand of a *finitely generated* free module?

Is a stably free module always free? [duplicate]

A problem about an $R$-module that is both injective and projective.

Prove that $\operatorname{Hom}_{\Bbb{Z}}(\Bbb{Q},\Bbb{Z}) = 0$ and show that $\Bbb{Q}$ is not a projective $\Bbb{Z}$-module.

Projective module over a PID is free? [duplicate]

Calculating Ext and Tor for $\mathbb Z/m\mathbb Z$ and $\mathbb Z/n\mathbb Z$

Why isn't an infinite direct product of copies of $\Bbb Z$ a free module?