Principle of covariance

（重定向自Covariance principle）

In physics, the principle of covariance emphasizes the formulation of physical laws using only certain physical quantities such that their measurements in different frames of reference can be unambiguously correlated (via Lorentz transformations).

Mathematically, the physical quantities must transform covariantly, that is, under a certain representation of the group of coordinate transformations between admissible frames of reference of the physical theory. This group is referred to as the covariance group.

单词	Covariance principle
释义	Covariance principle 英语百科 Principle of covariance （重定向自Covariance principle） In physics, the principle of covariance emphasizes the formulation of physical laws using only certain physical quantities such that their measurements in different frames of reference can be unambiguously correlated (via Lorentz transformations). Mathematically, the physical quantities must transform covariantly, that is, under a certain representation of the group of coordinate transformations between admissible frames of reference of the physical theory. This group is referred to as the covariance group.
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