Erdélyi was primarily an expert in special functions, in particular, Lamé functions, hypergeometric functions and orthogonal polynomials.
Green function | Graph of a function | Hash function | Schur function | Riemann zeta function | Dirac delta function | Bessel function | Gabriel Lamé | Monotonic function | Lateralization of brain function | function (mathematics) | Cryptographic hash function | Amy Lamé | Linear function | hash function | Gaussian function | function | Euler's totient function | Domain of unknown function | continuous function | Wave function | Quadratic function | Meijer G-function | Massieu function | Lyapunov function | Lamé | Lambert W function | Gamma function | Function block diagram | Feigenbaum function |