OXFORD 9000
📚 adj • entry_id 17629

idempotent

/ˌaɪ.dəmˈpoʊ.tənt/
Meanings (ES + gloss)
idempotente
(said of an element of an algebraic structure with a binary operation, such as a group or semigroup) Such that, when it operates on itself, the result is equal to itself.
Every finite semigroup has an idempotent element.
Every group has a unique idempotent element: namely, its identity element.
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