## Function classes for successful DE-Sinc approximations

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- by Ken’ichiro Tanaka, Masaaki Sugihara and Kazuo Murota PDF
- Math. Comp.
**78**(2009), 1553-1571 Request permission

## Abstract:

The DE-Sinc formulas, resulting from a combination of the Sinc approximation formula with the double exponential (DE) transformation, provide a highly efficient method for function approximation. In many cases they are more efficient than the SE-Sinc formulas, which are the Sinc approximation formulas combined with the single exponential (SE) transformations. Function classes suited to the SE-Sinc formulas have already been investigated in the literature through rigorous mathematical analysis, whereas this is not the case with the DE-Sinc formulas. This paper identifies function classes suited to the DE-Sinc formulas in a way compatible with the existing theoretical results for the SE-Sinc formulas. Furthermore, we identify alternative function classes for the DE-Sinc formulas, as well as for the SE-Sinc formulas, which are more useful in applications in the sense that the conditions imposed on the functions are easier to verify.## References

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## Additional Information

**Ken’ichiro Tanaka**- Affiliation: Department of Mathematical Informatics, Graduate School of Information Science and Technology, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
**Masaaki Sugihara**- Affiliation: Department of Mathematical Informatics, Graduate School of Information Science and Technology, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- Email: m_sugihara@mist.i.u-tokyo.ac.jp
**Kazuo Murota**- Affiliation: Department of Mathematical Informatics, Graduate School of Information Science and Technology, University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- Email: murota@mist.i.u-tokyo.ac.jp
- Received by editor(s): February 8, 2007
- Received by editor(s) in revised form: June 19, 2008
- Published electronically: October 28, 2008
- Additional Notes: This work was supported by the 21st Century COE Program on Information Science and Technology Strategic Core and a Grant-in-Aid of the Ministry of Education, Culture, Sports, Science and Technology of Japan. The first author was supported by the Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists. Technical details omitted in this paper can be found in [14]
- © Copyright 2008
American Mathematical Society

The copyright for this article reverts to public domain 28 years after publication. - Journal: Math. Comp.
**78**(2009), 1553-1571 - MSC (2000): Primary 65D05; Secondary 41A25, 41A30
- DOI: https://doi.org/10.1090/S0025-5718-08-02196-0
- MathSciNet review: 2501063