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neuron 发表于 2025-3-25 19:33:23

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AVOW 发表于 2025-3-25 21:00:34

0168-1222research workers, many of whom could not participate in the school. We thank all the lecturers for their meticulous lectures, the enthusiasm they brought to th978-90-481-4902-5978-94-017-1695-6Series ISSN 0168-1222 Series E-ISSN 2365-6425

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被诅咒的人 发表于 2025-3-26 09:57:23

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要求比…更好 发表于 2025-3-26 20:33:37

Tetrads, the Newman-Penrose Formalism and Spinors,t vector fields called a tetrad basis at each point of a region of spacetime. The relevant equations are written in this basis and if the tetrad is aligned according to the symmetries of the spacetime an easier set of equations may ensue which could be amenable to solution.
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查看完整版本: Titlebook: Geometry, Fields and Cosmology; Techniques and Appli B. R. Iyer,C. V. Vishveshwara Book 1997 Springer Science+Business Media Dordrecht 1997