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In this paper, we present a new method via the transfer matrix approach to obtain asymptotic formulae of orthogonal polynomials with asymptotically identical coefficients of bounded variation. We make use of the hyperbolicity of the recurrence matrices and employ Kooman's Theorem to diagonalize them simultaneously. The method introduced in this paper allows one to consider products of matrices such that entries of consecutive matrices are of bounded variation. Finally, we apply the asymptotic formulae obtained to solve the point mass problem on the real line when the measure is essentially supported on an interval. We prove that if a point mass is added to such a measure outside its essential support, then the perturbed recurrence coefficients will also be asymptotically identical with the same limit and of bounded variation.

Author

Wong, Manwah Lilian

Published

2010

Language

EN