Discriminants and Functional Equations for Polynomials Orthogonal on the Unit Circle
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We derive raising and lowering operators for orthogonal polynomials on the unit circle and find second order differential and $q$-difference equations for these polynomials. A general functional equation is found which allows one to relate the zeros of the orthogonal polynomials to the stationary values of an explicit quasi-energy and implies recurrences on the orthogonal polynomial coefficients. We also evaluate the discriminants and quantized discriminants of polynomials orthogonal on the unit circle.
27 pages, Latex2e plus AMS packages Fix to Eqs. (2.72) and (2.74)
27 pages, Latex2e plus AMS packages Fix to Eqs. (2.72) and (2.74)