Asymptotics and zeros of Sobolev orthogonal polynomials on unbounded supports
Francisco Marcellan, Juan Jose Moreno-Balcazar
Abstract
In this paper we present a survey about analytic properties of polynomials orthogonal with respect to a weighted Sobolev inner product such that the vector of measures has an unbounded support. In particular, we are focused in the study of the asymptotic behaviour of such polynomials as well as in the distribution of their zeros. Some open problems as well as some new directions for a future research are formulated.
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