The existing work on generating rational approximants of functions from their series expansions is extended to include the generalization of the Levin transforms due to Weniger. It is seen that this leads to approximants even better than the u-approximants obtained previously. It is further seen tha
Rational interpolation using Levin-Weniger transforms
โ Scribed by Ranjan Bhattacharya; Dhiranjan Roy; Siddhartha Bhowmick
- Book ID
- 104109668
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 617 KB
- Volume
- 101
- Category
- Article
- ISSN
- 0010-4655
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โฆ Synopsis
The difficulty of solving sets of nonlinear equations to obtain these formulas is obviated by a new I;.nearization prescription which is used iteratively. A comparative study on some test functions reveals that these interpolation formulas work better than the ones obtained from Pad6-type rational interpolation. Among the different interpolants obtained with the Levin-Weniger transforms, those obtained with the Weniger r-transform are found to better approximate test functions over the range of interpolation.
๐ SIMILAR VOLUMES
The Levin u-transform is used as a method of summation of the divergent perturbation series expansion for the conformation factor in the excluded-volume problem of dilute polymer solutions. The rational approximants thereby generated are superior to Pad6 approximants regarding their consistency with