Refinement monoid
= Refinement monoid
{wiki=Refinement_monoid}
A **refinement monoid** is a concept from algebra and theoretical computer science, specifically in the context of algebraic structures and formal language theory. It is a special type of monoid that is used to model certain types of relationships and transformations on sets or structures. In general, a **monoid** is an algebraic structure consisting of a set equipped with an associative binary operation and an identity element.