About semiclassical polynomials on the unit circle corresponding to the class (2,2) (Q1372721)

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scientific article; zbMATH DE number 1088847
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About semiclassical polynomials on the unit circle corresponding to the class (2,2)
scientific article; zbMATH DE number 1088847

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    About semiclassical polynomials on the unit circle corresponding to the class (2,2) (English)
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    14 December 1997
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    The problem of characterizing the orthogonal polynomials on the unit-circle whose moment functionals verify a functional relation \[ D((z-\alpha)(\overline \alpha z-1){\mathcal L})= -i((1=|\alpha|^2)z- 2\alpha){\mathcal L} \] is considered. The regular and positive definite Hermitian solutions of this problem are obtained.
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    regular functionals
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    difference equations
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    orthogonal polynomials
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    unit-circle
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    moment functionals
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