Invariant
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211433203
2008-05-10T09:12:34Z
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{{Wiktionarypar|invariant}}
'''Invariant''' may have several meanings, among which are:
* [[Invariant (computer science)]], an [[expression (programming)|expression]] whose value doesn't change during [[execution (computers)|program execution]]
* In computer science, a [[datatype|type]] in [[Method overriding (programming)|overriding]] that is neither [[covariance and contravariance (computer science)|covariant nor contravariant]]
* [[Invariant (mathematics)]], something unaltered by a [[transformation (mathematics)|transformation]], for example: taking a [[homotopy group]] [[functor]] on the [[Category (topology)|category]] of [[topological space]]s. Then, [[homeomorphic|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.
* [[Invariant Point (physics)]], A unique condition of temperature, pressure and concentration in a system, which allows a number of phases to coexist in equilibrium.
* [[Invariant representation (cognitive science)]], the form or essence of something, an abstraction from particulars
* [[Oxford University Invariant Society|The Invariant Society]], the undergraduate mathematical society of Oxford University
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[[cs:Invariant]]
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[[it:Invarianza]]
[[pl:Niezmiennik]]