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null tensor - translation to russian
IN GENERAL RELATIVITY, A SET OF INTEGRAL CURVES OF A (NOWHERE VANISHING) VECTOR FIELDS
Timelike congruence; Null congruence; Vorticity tensor
null tensor
математика
тензор нулевого ранга
скаляр
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
/dev/null
/dev-nuhl/ [The Unix null device, used as a data sink ] A
notional "black hole" in any information space being
discussed, used, or referred to. A controversial posting, for
example, might end "Kudos to rasputin@kremlin.org, flames to
/dev/null". See bit bucket.
[Jargon File ]
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.
