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math.DG2016
On The splitting of the Einstein field equations with respect to a general threading of spacetime
Aurel Bejancu, Hani Reda Farran
Based on a general threading of the spacetime , we obtain a new and simple splitting of a both the Einstein field equations (EFE) and the conservation laws in $(M,g)…
math.DG2015★ 8 cited
On the (1+3) threading of spacetime with respect to an arbitrary timelike vector field
Aurel Bejancu, Constantin Călin
We develop a new approach on the (1+3) threading of spacetime with respect to a congruence of curves defined by an arbitrary timelike vector field. The study is based on s…