Abstract
The computer algebra system REDUCE has recently been enriched by a package on exterior calculus. Here we apply the EXCALC package to the calculation of quantities within the Poincaré gauge theory of gravity, general relativity being included in this scheme as a spcial case. Thereby we simplify and streamline earlier results found by means of tensor-analytical REDUCE calculations.
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Schrüfer, E., Hehl, F.W. & McCrea, J.D. Exterior calculus on the computer: The REDUCE-package EXCALC applied to general relativity and to the Poincaré gauge theory. Gen Relat Gravit 19, 197–218 (1987). https://doi.org/10.1007/BF00770331
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DOI: https://doi.org/10.1007/BF00770331