INVARIANT

Invariant

In mathematics, an invariant is a property of a class of mathematical objects that remains unchanged when transformations of a certain type are applied to the objects. The particular class of objects and type of transformations are usually indicated by the context in which the term is used. For example, the area of a triangle is an invariant with respect to isometries of the Euclidean plane. The phrases "invariant under" and "invariant to" a transformation are both used. More generally, an invariant with respect to an equivalence relation is a property that is constant on each equivalence class.

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invariant

Noun

  1. An invariant quantity, function etc.

Adjective

  1. not varying; constant
  2. Unaffected by a specified operation (especially by a transformation)
  3. Neither covariant nor contravariant.


The above text is a snippet from Wiktionary: invariant
and as such is available under the Creative Commons Attribution/Share-Alike License.

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