Abstract:The methods, described in two previous papers, for generating variation principles for the matrix elements of Hermitian operators are extended here in several ways. The method is first extended to cover inhomogeneous equations. A defect of the original formulation, that it involved two trial functions, is removed by rewriting the principle so that one only appears. Finally, variation-iteration schemes are proposed.
- © Copyright 1965 American Mathematical Society
- Journal: Math. Comp. 19 (1965), 380-386
- MSC: Primary 81.49
- DOI: https://doi.org/10.1090/S0025-5718-1965-0207320-1
- MathSciNet review: 0207320