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Invariant may have several meanings, among which are:

- Invariant (computer science), an expression whose value doesn't change during program execution
- In computer science, a type in overriding that is neither covariant nor contravariant
- Invariant (mathematics), something unaltered by a transformation, for example: taking a homotopy group functor on the category of topological spaces. Then, homomeomorphic spaces have isomorphic fundamental group. See topological invariant.
- Invariant (music)
- Invariant (physics), meaning that something does not change under a transformation, such as from one reference frame to another
- Writer invariant, property of a text which is similar in all texts of a given author, and different in texts of different authors.

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Last updated on Monday August 25, 2008 at 17:31:45 PDT (GMT -0700)

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This article is licensed under the GNU Free Documentation License.

Last updated on Monday August 25, 2008 at 17:31:45 PDT (GMT -0700)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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