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.
Read more about Congruence (general Relativity): Types of Congruences, Relation With Vector Fields, Physical Interpretation, Kinematical Description
Famous quotes containing the word congruence:
“As for butterflies, I can hardly conceive
of ones attending upon you; but to question
the congruence of the complement is vain, if it exists.”
—Marianne Moore (18871972)