identity element

identity element
identity (def. 9b).
[1900-05]

* * *


Universalium. 2010.

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  • identity element — noun A member of a structure which, when applied to any other element via a binary operation induces an identity mapping; more specifically, given an operation ,, an element I is a left identity if I , x = x for any x in the structure See Also:… …   Wiktionary

  • identity element — noun Date: 1902 an element (as 0 in the set of all integers under addition or 1 in the set of positive integers under multiplication) that leaves any element of the set to which it belongs unchanged when combined with it by a specified operation …   New Collegiate Dictionary

  • Identity — may refer to:Philosophy* Identity (philosophy), the sameness of two things * Identity theory of mind, in the philosophy of mind, holds that the mind is identical to the brain * Personal identity (philosophy) * Identity (social science) * Identity …   Wikipedia

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  • Identity function — In mathematics, an identity function, also called identity map or identity transformation, is a function that always returns the same value that was used as its argument. In terms of equations, the function is given by f ( x ) = x… …   Wikipedia

  • identity — /uy den ti tee, i den /, n., pl. identities. 1. the state or fact of remaining the same one or ones, as under varying aspects or conditions: The identity of the fingerprints on the gun with those on file provided evidence that he was the killer.… …   Universalium

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