noun, Mathematics.
(def 9b).
identity element
The element of a set of numbers that when combined with another number under a particular binary operation leaves the second number unchanged. For example, 0 is the identity element under addition for the real numbers, since for any real number a, a + 0 = a, and 1 is the identity element under multiplication for the real numbers, since a × 1 = a.


Read Also:

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    noun, Mathematics. 1. (def 9d).

  • Identity-matrix

    noun, Mathematics. 1. a matrix that has 1 in each position on the main diagonal and 0 in all other positions.

  • Identity-politics

    noun, (used with a singular or plural verb) 1. political activity or movements based on or catering to the cultural, ethnic, gender, racial, religious, or social interests that characterize a group identity.

  • Identity-sign

    noun 1. the symbol (≡), designating identity, not equality.

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