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Woit · 2025-10-20
已登记出处中的最早位置:§29.2 · en。
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§29.2 · en · machine_draft · machine-draft-not-reviewed
In special relativity, spacetime is a real four-dimensional vector space with an indefinite inner product, of type or according to convention. Its preserving linear transformations form the Lorentz group; the orientation-preserving part is denoted or . Later chapters encounter the corresponding algebras or . Their generators are known as “Dirac -matrices”.