covariant

Co*va"ri*ant (k-v"r-ant), n. (Higher Alg.) Defn: A function involving the coefficients and the variables of a quantic, and such that when the quantic is lineally transformed the same function of the new variables and coefficients shall be equal to the old function multiplied by a factor. An invariant is a like function involving only the coefficients of the quantic.

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