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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)

 

Plana's summation formula for $ \sum\sp \infty\sb {m=1,3,\cdots}m\sp {-2}\sin(m\alpha),m\sp {-3}\cos(m\alpha),m\sp {-2}A\sp m,m\sp {-3}A\sp m$


Authors: Kevin M. Dempsey, Dajin Liu and John P. Dempsey
Journal: Math. Comp. 55 (1990), 693-703
MSC: Primary 65B10
MathSciNet review: 1035929
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Abstract | References | Similar Articles | Additional Information

Abstract: The four series

\begin{displaymath}\begin{array}{*{20}{c}} {\sum\limits_0^\infty {\sin (2k + 1)\... ...mits_0^\infty {{A^{2k + 1}}/{{(2k + 1)}^3}} } } \\ \end{array} \end{displaymath}

are very slowly convergent for $ 0 \leq \alpha \leq \pi $ and as $ A \to {1^ - }$. Direct summation involves thousands of terms to get the accuracy desired. Plana's summation formula along with Romberg's method of integration significantly and consistently improves the convergence and accuracy for the above series.

References [Enhancements On Off] (What's this?)

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Additional Information

DOI: http://dx.doi.org/10.1090/S0025-5718-1990-1035929-9
PII: S 0025-5718(1990)1035929-9
Article copyright: © Copyright 1990 American Mathematical Society