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Hawking’s singularity theorem for \(C^{1,1}\)-metrics. (English) Zbl 1328.83123

Summary: We provide a detailed proof of Hawking’s singularity theorem in the regularity class \({{C}^{1,1}}\), i.e., for spacetime metrics possessing locally Lipschitz continuous first derivatives. The proof uses recent results in \({{C}^{1,1}}\)-causality theory and is based on regularisation techniques adapted to the causal structure.

MSC:

83C75 Space-time singularities, cosmic censorship, etc.
83C05 Einstein’s equations (general structure, canonical formalism, Cauchy problems)
83C10 Equations of motion in general relativity and gravitational theory
53Z05 Applications of differential geometry to physics
53B30 Local differential geometry of Lorentz metrics, indefinite metrics