КОД (ISBN):
613034287X
613034287X
Книга: Pseudo-Riemannian Manifold: Riemannian Manifold, Bernhard Riemann, Metric Tensor, Definite Bilinear Form, Degeneracy, Differential Geometry, Differentiable Manifold, Euclidean Space
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High Quality Content by WIKIPEDIA articles! In differential geometry, a pseudo-Riemannian manifold (also called a semi-Riemannian manifold) is a generalization of a Riemannian manifold. It is one of many mathematical objects named after Bernhard Riemann. The key difference between a Riemannian manifold and a pseudo-Riemannian manifold is that on a pseudo-Riemannian manifold the metric tensor need not be positive-definite. Instead a weaker condition of nondegeneracy is imposed.
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