Abstract
Special relativity theory is generalized to two or more “maximal” signalling speeds. This framework is discussed in three contexts: (i) as a scenario for superluminal signalling and motion, (ii) as the possibility of two or more “light” cones due to the a “birefringent” vacuum, and (iii) as a further extension of conventionality beyond synchrony.
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Svozil, K. Relativizing Relativity. Foundations of Physics 30, 1001–1016 (2000). https://doi.org/10.1023/A:1003600519752
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DOI: https://doi.org/10.1023/A:1003600519752