Interpolation Operators on the Space of Holomorphic Functions on the Unit Circle |
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Authors: | Josef Kofron |
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Institution: | (1) Faculty of Mathematics and Physics, Department of Numerical Mathematics, Charles University, Sokolovska 83, 186 75 Praha 8 |
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Abstract: | The aim of the paper is to get an estimation of the error of the general interpolation rule for functions which are real valued on the interval —a, a],a (0,1), have a holomorphic extension on the unit circle and are quadratic integrable on the boundary of it. The obtained estimate does not depend on the derivatives of the function to be interpolated. The optimal interpolation formula with mutually different nodes is constructed and an error estimate as well as the rate of convergence are obtained. The general extremal problem with free weights and knots is solved. |
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Keywords: | numerical interpolation optimal interpolatory rule with prescribed nodes optimal interpolatory rule with free nodes remainder estimation |
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