Skip to Main Content

Mathematics of Computation

Published by the American Mathematical Society, the Mathematics of Computation (MCOM) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

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

The 2020 MCQ for Mathematics of Computation is 1.98.

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.

 

Convergence analysis for a generalized Richardson extrapolation process with an application to the $d^ {(1)}$-transformation on convergent and divergent logarithmic sequences
HTML articles powered by AMS MathViewer

by Avram Sidi PDF
Math. Comp. 64 (1995), 1627-1657 Request permission

Abstract:

In an earlier work by the author the Generalized Richardson Extrapolation Process (GREP) was introduced and some of its convergence and stability properties were discussed. In a more recent work by the author a special case of GREP, which we now call ${\text {GREP}^{(1)}}$, was considered and its properties were reviewed with emphasis on oscillatory sequences. In the first part of the present work we give a detailed convergence and stability analysis of ${\text {GREP}^{(1)}}$ as it applies to a large class of logarithmic sequences, both convergent and divergent. In particular, we prove several theorems concerning the columns and the diagonals of the corresponding extrapolation table. These theorems are very realistic in the sense that they explain the remarkable efficiency of ${\text {GREP}^{(1)}}$ in a very precise manner. In the second part we apply this analysis to the Levin-Sidi ${d^{(1)}}$-transformation, as the latter is used with a new strategy to accelerate the convergence of infinite series that converge logarithmically, or to sum the divergent extensions of such series. This is made possible by the observation that, when the proper analogy is drawn, the ${d^{(1)}}$-transformation is, in fact, a ${\text {GREP}^{(1)}}$. We append numerical examples that demonstrate the theory.
References
Similar Articles
  • Retrieve articles in Mathematics of Computation with MSC: 65B05
  • Retrieve articles in all journals with MSC: 65B05
Additional Information
  • © Copyright 1995 American Mathematical Society
  • Journal: Math. Comp. 64 (1995), 1627-1657
  • MSC: Primary 65B05
  • DOI: https://doi.org/10.1090/S0025-5718-1995-1312099-5
  • MathSciNet review: 1312099