Explicit formulas for the evaluation of the product P(z/sub 1/, z/sub 2/, . . .,z/sub n/)*P(z/sub 1//sup -1/, z/sub 2//sup -1/, . . ., z/sub n//sup -1/)

Explicit formulas are proposed to evaluate the product P(z/sub 1/,z/sub 2/,. . .,z/sub n/)*P(z/sub 1//sup -1/,z/sub 2//sup -1/ . . .,Z/sub n//sup -1/)=G(z/sub 1/, z/sub 2/, . . .,z/sub n/). A procedure to factorize G(z/sub 1/,z/sub 2/, . . .,z/sub n/) into the required product is given.<
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