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Parameters of a positive chain sequence associated with orthogonal polynomials. (English) Zbl 1485.42047

Summary: The objective here is to provide a new characterization of all the parameter sequences of a positive chain sequence that has been of importance in the study of orthogonal polynomials on the real line. Connection formulas and some applications that follow from this new characterization have also been explored. Example of a class of positive chain sequences having explicit formulas for all the parameter sequences is also provided.

MSC:

42C05 Orthogonal functions and polynomials, general theory of nontrigonometric harmonic analysis
33C45 Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.)
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