Sum of squares manifolds: The expressibility of the Laplace-Beltrami operator on pseudo-Riemannian manifolds as a sum of squares of vector fields (Q4211130)
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scientific article; zbMATH DE number 1198551
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Sum of squares manifolds: The expressibility of the Laplace-Beltrami operator on pseudo-Riemannian manifolds as a sum of squares of vector fields |
scientific article; zbMATH DE number 1198551 |
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Sum of squares manifolds: The expressibility of the Laplace-Beltrami operator on pseudo-Riemannian manifolds as a sum of squares of vector fields (English)
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10 September 1998
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differential geometry
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pseudo-Riemannian manifolds
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Laplace-Beltrami operator
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exterior differential system
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Cartan-Kähler theory
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