scientific article

zbMath0567.53019MaRDI QIDQ3683120

Graham S. Hall

Publication date: 1984

Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.

zbMATH Keywords

sectional curvatureRicci tensorPetrov classificationEinstein spacesGeneral Relativityenergy- momentum tensorclassification of second order tensorsspinor classifications

Mathematics Subject Classification ID

Special Riemannian manifolds (Einstein, Sasakian, etc.) (53C25) Applications of local differential geometry to the sciences (53B50) Local differential geometry of Lorentz metrics, indefinite metrics (53B30)

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The nontriviality of trivial general covariance: how electrons restrict `time' coordinates, spinors (almost) fit into tensor calculus, and \(\frac{7}{16}\) of a tetrad is surplus structure

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