A linear Polynomial of Dyads
consisting of nine components which
transform as
(1) | |||
(2) | |||
(3) |
A unit dyadic is also called the Idemfactor and is defined such that
(4) |
(5) |
(6) |
See also Dyad, Tetradic
References
Arfken, G. ``Dyadics.'' §3.5 in
Mathematical Methods for Physicists, 3rd ed. Orlando, FL: Academic Press, pp. 137-140, 1985.
Morse, P. M. and Feshbach, H. ``Dyadics and Other Vector Operators.'' §1.6 in
Methods of Theoretical Physics, Part I. New York: McGraw-Hill, pp. 54-92, 1953.