Contractions of the LCT Lie algebra for signature (1,4) yield the de Sitter algebra so(1,4) and the Poincaré algebra iso(1,3) in the respective limits of minimum length ℓ and maximum length L.
Weinberg.Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity
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Contractions of the relativistic quantum LCT group and the emergence of spacetime symmetries
Contractions of the LCT Lie algebra for signature (1,4) yield the de Sitter algebra so(1,4) and the Poincaré algebra iso(1,3) in the respective limits of minimum length ℓ and maximum length L.