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Tetradics transform Dyadics in much the same way that Dyadics transform Vectors. They are represented using Hebrew characters and have 81 components (Morse and Feshbach 1953, pp. 72-73). The use of tetradics is archaic, since Tensors perform the same function but are notationally simpler.


Morse, P. M. and Feshbach, H. Methods of Theoretical Physics, Vol. 1. New York: McGraw-Hill, 1953.

© 1996-9 Eric W. Weisstein