Publicação: Szego{double acute} and para-orthogonal polynomials on the real line: Zeros and canonical spectral transformations
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We study polynomials which satisfy the same recurrence relation as the Szego{double acute} polynomials, however, with the restriction that the (reflection) coefficients in the recurrence are larger than one in modulus. Para-orthogonal polynomials that follow from these Szego{double acute} polynomials are also considered. With positive values for the reflection coefficients, zeros of the Szego{double acute} polynomials, para-orthogonal polynomials and associated quadrature rules are also studied. Finally, again with positive values for the reflection coefficients, interlacing properties of the Szego{double acute} polynomials and polynomials arising from canonical spectral transformations are obtained. © 2012 American Mathematical Society.
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Canonical spectral transformations, Para-orthogonal polynomials, Reflection coefficients, Szeg{double acute} polynomials
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Inglês
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Mathematics of Computation, v. 81, n. 280, p. 2229-2249, 2012.
