New posts in Short Exact Sequences

The geometry of the action of the semidirect product

Exact sequence of $n$th powers of abelian groups

Do all exact sequences $0 \rightarrow A \rightarrow A \oplus B \rightarrow B \rightarrow 0$ split for finitely generated abelian groups?

Origin of exact sequences

(Short) Exact sequences with no commutative diagram between them

Exact sequence of monoids

What are the advantages of phrasing results in terms of exact sequences and commutative diagrams?