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Theory of relativity. Unified field theory --- 530.12 --- Relativity principle --- 530.12 Relativity principle --- General relativity (Physics)

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The theorems of Hawking and Penrose show that space-times are likely to contain incomplete geodesics. Such geodesics are said to end at a singularity if it is impossible to continue the space-time and geodesic without violating the usual topological and smoothness conditions on the space-time. In this book the different possible singularities are defined, and the mathematical methods needed to extend the space-time are described in detail. The results obtained (many appearing here for the first time) show that singularities are associated with a lack of smoothness in the Riemann tensor. While the Friedmann singularity is analysed as an example, the emphasis is on general theorems and techniques rather than on the classification of particular exact solutions.

Singularities (Mathematics) --- Space and time --- Mathematical physics. --- Mathematical models.

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Algemene relativiteitstheorie --- General relativity (Physics) --- Manifolds (Mathematics) --- Menigvuldigheden (Wiskunde) --- Relativiteit [Algemene ] (Fysica) --- Relativiteitstheorie [Algemene ] --- Relativité générale (Physique) --- Varietes (Mathematiques)