An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

The → covariance of a → time series overt time.

→ auto-; → covariance.

The autocovariance function (ACF) is defined as the sequence of covariances of a stationary process.
A mathematical function that expresses the autocovariance of a series in terms of the interval of separation.

→ autocovariance; → function.

In statistics, a measure of linear dependence. For two random variables X and Y with expectations m_x and m_y, the covariance is E{(X - m_x)(Y - m_y)}.

From co-, → com-, + → variance.

From ham-, → com-, + vartâyi, → variance.

In special relativity, the principle that the laws of physics take the same mathematical form in all inertial frames of reference.

→ principle; → covariance.