Bivariate second--order linear partial differential equations and orthogonal polynomial solutions

Details Bivariate second--order linear partial differential equations and orthogonal polynomial solutions Bivariate second--order linear partial differential equations and orthogonal polynomial solutions

2011-01-13

arxiv.org/abs/1101.2640v1

Mathematics

Analysis of PDEs

27 pages

Scientific paper

In this paper we construct the main algebraic and differential properties and the weight functions of orthogonal polynomial solutions of bivariate second--order linear partial differential equations, which are admissible potentially self--adjoint and of hypergeometric type. General formulae for all these properties are obtained explicitly in terms of the polynomial coefficients of the partial differential equation, using vector matrix notation. Moreover, Rodrigues representations for the polynomial eigensolutions and for their partial derivatives of any order are given. Finally, as illustration, these results are applied to specific Appell and Koornwinder orthogonal polynomials, solutions of the same partial differential equation.

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