Bessel, Legendre, Hermite, Laguerre, hypergeometric, elliptic — the canonical solutions to PDEs separated in standard coordinate systems, and to recurrent spectral problems (hydrogenic atom, harmonic oscillator, vibrating membrane).
Bessel, Legendre, Hermite, Laguerre, hypergeometric, elliptic — the canonical solutions to PDEs separated in standard coordinate systems, and to recurrent spectral problems (hydrogenic atom, harmonic oscillator, vibrating membrane).