Develops a hypersurface data formalism as a unifying framework for the characteristic Cauchy problem, Killing initial data, metric expansion, and conformal null infinity in general relativity.
Ashtekar, ‘Geometry and physics of null infinity’,Surveys in Differential Geometry, vol.20, pp
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Abstract null hypersurfaces and characteristic initial value problems in General Relativity
Develops a hypersurface data formalism as a unifying framework for the characteristic Cauchy problem, Killing initial data, metric expansion, and conformal null infinity in general relativity.