Orthogonal polynomials 6 Mathematics 5 Functions, Orthogonal 3 Harmonic analysis 3 Hypergeometric functions-- Orthogonal polynomials-- Chebyshev polynomials-- Representations of groups 3 Numerical solutions 3 Orthogonal frequency division multiplexing 3 Polynomials 3 Algebras, Linear 2 Continued fractions-- Summability theory-- Series-- Infinite-- Eisenstein series 2 Design of Experiments 2 Differential equations 2 Differential equations, Partial 2 Fourier series 2 Functional analysis 2 Functions 2 Functions of real variables-- Analysis-- Mathematics 2 Lie algebras 2 Lie groups 2 Orthogonal 2 Orthogonalization methods 2 Series, Orthogonal 2 Agricultural Statistics 1 Algebra 1 Algebraic Geometry 1 Algebraic geometry 1 Algebras, Linear -- Textbooks. Algebras, Linear 1 Applied statistics 1 Approximation theory 1 Approximations-Theory 1