Invariant and invariance may refer to:
Computer science
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Invariant (computer science), an expression whose value doesn't change during program execution
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Loop invariant, a property of a program loop that is true before (and after) each iteration
* A data type in method overriding that is neither
covariant nor contravariant
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Class invariant, an invariant used to constrain objects of a class
Physics, mathematics, and statistics
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Invariant (mathematics), a property of a mathematical object that is not changed by a specific operation or transformation
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Rotational invariance, the property of function whose value does not change when arbitrary rotations are applied to its argument
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Scale invariance, a property of objects or laws that do not change if scales of length, energy, or other variables, are multiplied by a common factor
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Topological invariant
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Invariant (physics) In theoretical physics, an invariant is an observable of a physical system which remains unchanged under some transformation. Invariance, as a broader term, also applies to the no change of form of physical laws under a transformation, and is close ...
, something does not change under a transformation, such as from one reference frame to another
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Invariant estimator in statistics
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Measurement invariance, a statistical property of measurement
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Oxford University Invariant Society
The Oxford University Invariant Society, or 'The Invariants', is a university society open to members of the University of Oxford, dedicated to promotion of interest in mathematics. The society regularly hosts talks from professional mathematic ...
, an Oxford student mathematics club
Other uses
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Invariant (linguistics)
In linguistic morphology, inflection (or inflexion) is a process of word formation in which a word is modified to express different grammatical categories such as tense, case, voice, aspect, person, number, gender, mood, animacy, and defini ...
, a word that does not undergo inflection
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Invariant (music)
The twelve-tone technique—also known as dodecaphony, twelve-tone serialism, and (in British usage) twelve-note composition—is a method of musical composition first devised by Austrian composer Josef Matthias Hauer, who published his "law ...
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Writer invariant Writer invariant, also called authorial invariant or author's invariant, is a property of a text which is invariant of its author, that is, it will be similar in all texts of a given author and different in texts of different authors. It can be used ...
, 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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''Invariance'' (magazine), a French Communist journal
* ''
Invariances'', a 2001 book by philosopher Robert Nozick
See also
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{{Disambiguation