A null tetrad is defined by
![g_(ij)=[0 1 0 0; 1 0 0 0; 0 0 0 -1; 0 0 -1 0].](/images/equations/NullTetrad/NumberedEquation1.svg) |
It can be expressed as
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Null Tetrad
See also
TetradExplore with Wolfram|Alpha
References
d'Inverno, R. Introducing Einstein's Relativity. Oxford, England: Oxford University Press, pp. 248-249, 1992.Referenced on Wolfram|Alpha
Null TetradCite this as:
Weisstein, Eric W. "Null Tetrad." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/NullTetrad.html