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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.


Variation principles for an arbitrary operator. III
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by L. M. Delves PDF
Math. Comp. 19 (1965), 380-386 Request permission


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.
  • L. M. Delves, A variation principle for arbitrary operators, Nuclear Phys. 41 (1963), 497–503. MR 0149832
  • L. M. Delves, Nuclear Phys., v. 45, 1963, pp. 313–320.
  • D. R. Hartree, Numerical analysis, Oxford, at the Clarendon Press, 1952. MR 0052871
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Additional Information
  • © Copyright 1965 American Mathematical Society
  • Journal: Math. Comp. 19 (1965), 380-386
  • MSC: Primary 81.49
  • DOI:
  • MathSciNet review: 0207320