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Identity element
noun
Definitions
Noun
- 1 An element of an algebraic structure which when applied, in either order, to any other element via a binary operation yields the other element.
"Therefore the number 0 is not considered an identity element for subtraction, even though x-0#61;x for all x, since 0-x#92;nex."
- 2 an operator that leaves unchanged the element on which it operates wordnet
See also for "identity element"
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