indicial function
1Frobenius method — In mathematics, the Frobenius method, named after Ferdinand Georg Frobenius, is a way to find an infinite series solution for a second order ordinary differential equation of the form in the vicinity of the regular singular point z=0. We can… …
2Hooke's atom — Hooke s atom, also known as harmonium, refers to an artificial helium like atom where the Coulombic electron nucleus interaction potential is replaced by a harmonic potential. [cite book |last=Lucjan |first=Piela |title=Ideas of Quantum Chemistry …
3Regular singular point — In mathematics, in the theory of ordinary differential equations in the complex plane , the points of are classified into ordinary points, at which the equation s coefficients are analytic functions, and singular points, at which some coefficient …
4Index notation — is used in mathematics to refer to the elements of matrices or the components of a vector. The formalism of how indices are used varies according to the discipline. In particular, there are different methods for referring to the elements of a… …
