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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.

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On the construction of Dirichlet series approximations for completely monotone functions
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by R. J. Loy and R. S. Anderssen PDF
Math. Comp. 83 (2014), 835-846 Request permission


In a series of papers, Liu established and analysed conditions under which completely monotone ($\mathcal {CM}$) functions can be approximated by finite Dirichlet series with positive coefficients. Motivated by a representation theorem of Pollard for Kohlrausch functions, a constructive procedure and proof is given for $\mathcal {CM}$ functions which are the Laplace transform of absolutely continuous finite positive measures. The importance of this result, which is new even for Kohlrausch functions, is that it allows accurate approximations to be generated for the Laplace transform of such $\mathcal {CM}$ functions which can then be utilized in various ways including the approximate solution of the interconversion relationship of rheology and its generalization for the solution of Volterra integral equations of the first kind.
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Additional Information
  • R. J. Loy
  • Affiliation: Mathematical Sciences Institute, Australian National University, Canberra, ACT 0200, Australia
  • MR Author ID: 116345
  • Email:
  • R. S. Anderssen
  • Affiliation: CSIRO Mathematics, Informatics and Statistics, GPO Box 664, Canberra, ACT 2601, Australia
  • Email:
  • Received by editor(s): January 25, 2012
  • Received by editor(s) in revised form: May 29, 2012, and June 12, 2012
  • Published electronically: June 11, 2013
  • © Copyright 2013 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Math. Comp. 83 (2014), 835-846
  • MSC (2010): Primary 41A30, 41A29; Secondary 65R20, 76A10
  • DOI:
  • MathSciNet review: 3143694