Presenting a comprehensive theory of orthogonal polynomials in two realvariables and properties of Fourier series in these polynomials this volumealso gives cas... » 

Presenting a comprehensive theory of orthogonal polynomials in two realvariables and properties of Fourier series in these polynomials this volumealso gives cases of orthogonality over a region and on a contour. The textincludes the classification of differential equations which admits orthogonalpolynomials as eigenfunctions and several twodimensional analogies ofclassical orthogonal polynomials. «