The Problem of A. F. Timan on the Precise Order of Decrease of the Best Approximations
β Scribed by R.K.S. Rathore
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 470 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0021-9045
No coin nor oath required. For personal study only.
β¦ Synopsis
The problem of Timan on finding a necessary and sufficient condition for (A_{\sigma}(f){L{q}} \sim \omega_{k}(f ; 1 / \sigma){L{q}}, \sigma \rightarrow \infty), is solved. The condition is (\omega_{k}(f ; \delta){L{q}} \sim \omega_{k+1}(f ; \delta){L{q}}), (\delta \rightarrow 0). Related problems in other situations have also been studied. (C 1994) Academic Press, Inc.
π SIMILAR VOLUMES
Bos and Liang have separately proved that the Kergin interpolants with respect to distinguished nodes on the unit disk are best approximations of the monomials in the infinity norm. These results are extended by characterizing the nodes as solutions of a system of nonlinear equations. Thus, it is po