### Invariant • (n.) An invariable quantity; specifically, a function of the coefficients of one or more forms, which remains unaltered, when these undergo suitable linear transformations.
Found on http://thinkexist.com/dictionary/meaning/invariant/

### invariant (from the article `projective geometry`) With Desargues`s provision of infinitely distant points for parallels, the reality plane and the projective plane are essentially ... ...with respect to which the components of stress are referred, I1, I2, and I3 must be independent of that choice and are therefore called stress ... In a highl...
Found on http://www.britannica.com/eb/a-z/i/35

### invariant noun a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it
Found on https://www.encyclo.co.uk/local/20974

### Invariant [computer science] In computer science, an invariant is a condition that can be relied upon to be true during execution of a program, or during some portion of it. It is a logical assertion that is held to always be true during a certain phase of execution. For example, a loop invariant is a condition that is true at the beginning and end o...
Found on http://en.wikipedia.org/wiki/Invariant_(computer_science)

### Invariant [mathematics] 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 ...
Found on http://en.wikipedia.org/wiki/Invariant_(mathematics)

### Invariant [physics] In mathematics and theoretical physics, an invariant is a property of a system which remains unchanged under some transformation. Note: Invariance, does not imply not varying, it pertains to a condition where there is no variation of the system under observation, and the only applicable condition, is the instantaneous condition. I...
Found on http://en.wikipedia.org/wiki/Invariant_(physics)

### Invariant In·va'ri·ant noun (Math.) An invariable quantity; specifically, a function of the coefficients of one or more forms, which remains unaltered, when these undergo suitable linear transformations. J. J. Sylvester.
Found on http://www.encyclo.co.uk/webster/I/91

### invariant a condition of the representation of an object (the object's state) that should hold each time an interface function is called; usually established by a constructor TC++PL 24.3.7, E.3.5.
Found on http://www.stroustrup.com/glossary.html

### Invariant A constant quantity. In mathematics, a quantity which remains the same under a group of transformations. -- J.K.F.
Found on http://www.ditext.com/runes/i.html

### invariant [adj] - (mathematics) unaffected by a designated operation or transformation
Found on http://www.webdictionary.co.uk/definition.php?query=invariant

### invariant • Something that stays the same when a particular transformation is carried out. • A value that is unchanged when a particular function is applied. • In topology, a number, polynomial, or other quantity associated to a topological object such as a knot or 3-manifold, which depends...
Found on http://www.daviddarling.info/encyclopedia/I/invariant.html
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