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In music using the twelve tone technique invariance describes the portions of rows which have been so designed that they remain invariant under the allowable transformations (inversion, retrograde, retrograde-inversion, multiplication). George Perle describes their use as "pivots" or non- tonal ways of emphasizing certain pitches. Invariant rows are also combinatorial. Musical terminology

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Topics: Invariance (music), Invariant Mass, Invariant Theory...

InvariantInvariant may have meanings invariant (computer science), such as a combination of variables not altered in a loop invariant (mathematics), something unaltered by a transformation invariant (music) invariant (physics) conserved by system symmetry.	Invariant massIn particle physics, the mathematical combination of a particle's energy and its momentum to give a value for the mass of the particle at rest. The invariant mass is the same for all frames of reference (see Special Relativity). The invariant mass of a sy	Invariant theoryIn mathematics, invariant theory refers to the study of invariant algebraic forms (equivalently, symmetric tensors) for the action of linear transformations. This was a major field of study in the latter part of the nineteenth century, when it appeared th
Invariant subspaceLinear algebra Functional analysis Operator theory In mathematics, an invariant subspace of a linear mapping over some vector space V is a subspace W of V such that : , literally: T ''W is contained in W''. An invariant subspace of T is said to be T invar	Invariant (mathematics)An invariant in mathematics is something that does not change under a set of transformations. The property of being an invariant is invariance . For the laymen, let us just say an invariant is some kind of correspondence between two types of mathematical	Invariant (physics)In physics, invariants are usually quantities conserved (unchanged) by the symmetries of the physical system. See Noether's theorem. The correspondance between symmetries and conserved quantities is apparent through conservation laws. Much work has been d
Invariant (computer science)	Invariant speed

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