Variation

Encyclopedia : V : VA : VAR : Variation

Variation means an instance of change or the rate or magnitude of change. It may refer to

Biology:

Biodiversity
Genetic variation, differences within a species
Variation (genetics), mutations resulting from chromosomal alteration

Physics:

Magnetic variation, difference between magnetic north and true north, measured as an angle
Variation (astronomy), any perturbation of the mean motion or orbit of a planet or satellite, particularly of the Moon

Mathematics:

Bounded variation
Calculus of variations, in which δf is called the variation of the function f, is a field of mathematics which deals with functions of functions.
Variance (variation is a misnomer though), in statistics a measure of the spread of a variable

Arts:

Variation (ballet), solo dance or dance figure *Variation (music), formal technique where material is altered during repetition

Other:

Direct variation
Indirect variation
Variation (game), modifications made to a game by a community of players (as opposed to a central authority)
Varations (band), French rock band

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