GHP formalism

The GHP formalism (or Geroch–Held–Penrose formalism) is a technique used in the mathematics of general relativity that involves singling out a pair of null directions at each point of spacetime.

See also

References

Geroch, Robert, Held, A. and Penrose, Roger. "A space-time calculus based on pairs of null directions". JMP. Retrieved February 19, 2005.

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