Invariant

Invariance is the immutability of sizes. The corresponding adjective is invariant. The term is used in the following studies:

In physics and mathematics in the context of transformations Invariance of physical laws under symmetry transformations, in particular invariance under: Displacement and uniform movement of the coordinates in classical physics as Galilean invariance, see Galilei transformation
Displacement and uniform movement of the coordinates in the theory of relativity, see Lorentz transformation
Spatial reflection, see Parity ( physics )
Shift in time, see time-invariance
Temporal reflection, see time reversal (physics)
Interchange of particles and antiparticles, see charge conjugation
Multiple transformations simultaneously, see, for example CP- invariance and CPT invariance
Scaling of the variables considered, see scale invariance

As an invariant of the size itself is called, which remains unchanged:

In physics such as the invariant mass opposite ( relativistic ) is invariant with changes in speed.
In mathematics an associated object to a size that does not change with each matching a class of modifications of the object, see invariant (mathematics)
In computer science, a statement that is true about the execution of specific program commands of time, see invariant ( computer science )