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Idempotent

An operator A^~ such that A^~^2=A^~ or an element of an algebra x such that x^2=x.

See also

Automorphic Number, Boolean Algebra, Group, Idempotent Matrix, Idempotent Number, Identity Function, Semigroup

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Cite this as:

Weisstein, Eric W. "Idempotent." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Idempotent.html

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