The Lorentz invariance of a discrete space-time (casual structure) is commented upon.
DOI:https://doi.org/10.1103/PhysRevLett.60.656
©1988 American Physical Society
Luca Bombelli, Joohan Lee, David Meyer, and Rafael D. Sorkin
Vol. 60, Iss. 7 — 15 February 1988
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