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Applicable Analysis
An International Journal
Volume 89, 2010 - Issue 3
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Original Articles

The properly posed set of nodes of multivariate Lagrange interpolation along algebraic manifold

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Pages 293-305 | Received 18 Sep 2008, Accepted 10 Nov 2009, Published online: 05 Mar 2010
 

Abstract

In this article, Lagrange interpolation by polynomials in several variables is studied in a systematic way. After defining properly posed set of nodes (PPSN) along the sufficiently intersected algebraic manifolds, we give the sufficient and necessary condition for judging PPSN and propose the generally constructive method of PPSN for Lagrange interpolation along algebraic manifolds, which is named as an algebraic hypersurface-superposition process. The theory is illustrated with a simple example in ℝ3. Moreover, the relationship between the sufficiently intersected polynomials and H-basis is also discussed.

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Acknowledgements

The authors would like to thank Prof Zhongxuan Luo of Dalian University of Technology for his valuable comments and suggestions which helped to improve the article. This project was supported by the National Nature Science Foundation of China (No. 10771028, No. 10801023).

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