New posts in Modules

Is the sheafication of a "presheaf of $\mathcal{O}_X$-modules" an $\mathcal{O}_X$-module?

Nilpotent elements of group algebra $\Bbb CG$

How does linear algebra over the octonions and other division algebras work?

When is the submodule of a product a product of submodules?

What's the intuition behind a split exact sequence?

Do both versions (invariant and primary) of the Fundamental Theorem for Finitely Generated Abelian Groups hold at the same time?

Is it possible to imbed any ring into a semi-simple ring?

Suppose $I\oplus K$ is a free module, then "$KI\subseteq K\cap I$"

When is every direct product of a ring also a free module?

$v \otimes v' = v' \otimes v$ implies $v = av'$