Monoid (category theory)
= Monoid (category theory)
{wiki=Monoid_(category_theory)}
In category theory, a **monoid** can be understood as a particular type of algebraic structure that can be defined within the context of categories. More formally, a monoid can be characterized using the concept of a monoidal category, but it can also be defined in a more straightforward manner as a set equipped with a binary operation satisfying certain axioms.