Partial differential equations | Lorentzian manifolds

Cauchy surface

In the mathematical field of Lorentzian geometry, a Cauchy surface is a certain kind of submanifold of a Lorentzian manifold. In the application of Lorentzian geometry to the physics of general relativity, a Cauchy surface is usually interpreted as defining an "instant of time"; in the mathematics of general relativity, Cauchy surfaces are important in the formulation of the Einstein equations as an evolutionary problem. They are named for French mathematician Augustin-Louis Cauchy (1789-1857) due to their relevance for the Cauchy problem of general relativity. (Wikipedia).

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Related pages

Manifold | Causal structure | Submanifold | Anti-de Sitter space | Augustin-Louis Cauchy | Cauchy problem | Gradient | Mean value theorem | Intermediate value theorem | Pseudo-Riemannian manifold