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Identity vs Undefined - What's the difference?

identity | undefined |

As a noun identity

is sameness, identicalness; the quality or fact of (several specified things) being the same.

As an adjective undefined is

lacking a definition or value.

identity

English

(wikipedia identity)

Noun

(identities)
  • Sameness, identicalness; the quality or fact of (several specified things) being the same.
  • * 1997 , Hydrothermal Vent Fauna'', in ''Advances in Marine Biology: The Biogeography of the Oceans , page 111:
  • The difference or character that marks off an individual from the rest of the same kind, selfhood.
  • *
  • A name or persona—the mask or appearance one presents to the world—by which one is known.
    • This criminal has taken on several identities .
  • Sense of who one is.
    • I've been through so many changes, I have no sense of identity .
    This nation has a strong identity .
  • (algebra, computing) Any function which maps all elements of its domain to themselves.
  • (algebra) An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this, second element.

    • Synonyms

    * selfhood * identity function

    Derived terms

    * additive identity * identity card * identity of indiscernibles * identity theft * law of identity * left identity * mistaken identity * multiplicative identity * personal identity * quasiidentity * right identity

    Related terms

    * identic * identical * identification * identify

    External links

    * *

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined