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- Georgios O. Papadopoulos (Papadopoulos-Xanthopoulos solution),
- Achilles Papapetrou (chart for Ernst vacuum family, Majumdar-Papapetrou electrovacuums, Dixon-Papapetrou equations),
- L.K. Patel (Vaidya-Patel solution),
- Paul Painlevé (Painlevé chart in Schwarzschild vacuum),
- Roger Penrose (singularity theorems, conformal compactification and techniques from algebraic geometry, Penrose limits, cosmic censorship hypotheses, Penrose inequalities, geometry of gravitational plane waves, impulsive waves, Penrose/Khan colliding plane wave, Newman/Penrose formalism, twistor theory, Weyl curvature hypothesis, highly influential monograph),
- Asher Peres (gravitational wave maverick),
- Zoltán Perjés (relavistic multipoles, Ernst vacuums),
- Volker Perlick (solution methods, strong lensing),
- Alexei Zinovievich Petrov (A. Z. Petrov or Aleksey Zinovjevitch Petrov; Petrov classification of algebraic properties of Weyl curvatue tensor),
- Tsvi Piran (gravitational collapse),
- Felix A. E. Pirani (gravitational radiation, Petrov/Pirani classification of algebraic properties of Weyl curvature tensor),
- Jerzy F. Plebański (Plebanski vacuum, Plebanski action),
- Boris Podolsky (EPR paradox),
- Eric Poisson (black hole interiors, mass inflation, monograph),
- William H. Press (gravitational wave astronomy, problem book),
- Richard H. Price (power law decay of perturbations, problem book),
Read more about this topic: Contributors To General Relativity