Covariance (disambiguation)

Covariance may refer to:

Covariance, a measure of how much two variables change together
Covariance matrix, a matrix of covariances between a number of variables
Cross-covariance, the covariance between two vectors of variables
Autocovariance, the covariance of a signal with a time-shifted version of itself
Covariance function, a function giving the covariance of a random field with itself at two locations
Covariant transformation, a rule that describes how certain physical entities change under a change of coordinate system
Covariance and contravariance of vectors, properties of how vector coordinates change under a change of basis
Covariance and contravariance of functors, properties of functors
Covariance and contravariance (computer science), a system of class relations in computer science
General covariance, the invariance of the form of physical laws under arbitrary differential coordinate transformations
Lorentz covariance, a property of space-time that follows from the special theory of relativity
Poincaré covariance, related to Lorentz covariance
Eddy covariance, an atmospheric flux measurement technique

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