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vorticity tensor - translation to russian
IN GENERAL RELATIVITY, A SET OF INTEGRAL CURVES OF A (NOWHERE VANISHING) VECTOR FIELDS
Timelike congruence; Null congruence; Vorticity tensor
vorticity tensor
математика
тензор завихренности
tensor density
GENERALIZATION OF TENSOR FIELDS
Relative tensor; Tensor densities; Vector density
математика
тензорная плотность
relative tensor
GENERALIZATION OF TENSOR FIELDS
Relative tensor; Tensor densities; Vector density
математика
относительный тензор
псевдотензор
Definition
Vortex line
·add. ·- A line, within a rotating fluid, whose tangent at every point is the instantaneous axis of rotation as that point of the fluid.
Wikipedia
Congruence (general relativity)
In general relativity, a congruence (more properly, a congruence of curves) is the set of integral curves of a (nowhere vanishing) vector field in a four-dimensional Lorentzian manifold which is interpreted physically as a model of spacetime. Often this manifold will be taken to be an exact or approximate solution to the Einstein field equation.
