TY - CHAP AU - Gómez-Ullate Otaiza, David AU - Kamran, Niky AU - Milson, Robert PY - 2012 DO - 10.1090/conm/563/11164 SN - 978-0-8218-7584-1 UR - https://hdl.handle.net/20.500.14352/45574 AB - We survey some recent developments in the theory of orthogonal polynomials defined by differential equations. The key finding is that there exist orthogonal polynomials defined by 2nd order differential equations that fall outside the classical... LA - eng PB - Amer Mathematical Soc KW - Shape-invariant potentials KW - Quasi-exact solvability KW - Differential-equation KW - Laguerre-polynomials KW - Systems KW - Supersymmetry TI - On orthogonal polynomials spanning a non-standard flag TY - book part ER -