New posts in Abelian Categories

What are exact sequences, metaphysically speaking?

Proving the snake lemma without a diagram chase

Abelian category from the category of Hopf algebras

Abelian category equivalent to a non-abelian category

Concrete examples of Freyd-Mitchell embedding

Adjoints for radical and socle functors

Are hearts of all $t$-structures on smashing triangulated categories closed with respect to coproducts (also)?

Infinite Krull-Schmidt categories?

Direct sum of injective modules is injective

What is a triangle?