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Additional
Einstein equation
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Einstein field equations
The
Einstein field equations
(
EFE
; also known as "
Einstein's equations
") are the set of 10
equations
in
Albert Einstein
's
general theory of relativity
that describes the
fundamental interaction
of
gravitation
as a result of
spacetime
being
curved
by
matter
and
energy
. First published by Einstein in 1915 as a
tensor equation
, the EFE equate local spacetime
curvature
(expressed by the
Einstein tensor
) with the local energy and
momentum
within that spacetime (expressed by the
stress–energy tensor
).
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