| A UNIFIED APPROACH TO CERTAIN PROBLEMS OF BEST LOCAL APPROXIMATION |
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| 作者姓名： | H. H. Cuenya M.D. Lorenzo C. N. Rodriguez |
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| 作者单位： | Universidad Nacional de Rio Cuarto Argentina，Universidad Nacional de Rio Cuarto，Argentina，Universidad Nacional de Rio Cuarto，Argentina |
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| 基金项目： | Supported by Universidad National de Rfo Cuarto and C0NICET. |
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| 摘 要： | In this paper we study best local quasi-rational approximation and best local approximation from finite dimensional subspaces of vectorial functions of several variables. Our approach extends and unifies several problems concerning best local multi-point approximation in different norms.
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| 关 键 词： | 局部逼近 准有理逼近 常规标准 有限子空间 |
| 收稿时间： | 10 October 2006 |
| 修稿时间： | 2006-10-10 |
A unified approach to certain problems of best local approximation |
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| H. H. Cuenya M.D. Lorenzo C. N. Rodriguez.A UNIFIED APPROACH TO CERTAIN PROBLEMS OF BEST LOCAL APPROXIMATION[J].Analysis in Theory and Applications,2007,23(2):162-170. |
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| Authors: | H H Cuenya M D Lorenzo C N Rodriguez |
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| Institution: | (1) Departamento de Matemática, Universidad Nacional de Rio Cuarto, 5800 Rio Cuarto, Argentina |
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| Abstract: | In this paper we study best local quasi-rational approximation and best local approximation from finite dimensional subspaces of vectorial functions of several variables.Our approach extends and unifies several problems concerning best local multi-point approximation in different norms. |
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| Keywords: | best local approximation quasi-rational approximation general norms APPROXIMATION LOCAL BEST PROBLEMS approach problems concerning different norms paper study best local approximation finite subspaces functions variables |
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