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THE DIVERGENCE OF LAGRANGE INTERPOLATION IN EQUIDISTANT NODES 被引量:5
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作者 Lu Zhikang and Xia Mao (Hangzhou Teacher’s College, China)Department of Mathematics Hangzhou Teacher’s College Hangzhou,310012 P.R.China 《Analysis in Theory and Applications》 2003年第2期160-165,共6页
It is a classical result of Bernstein that the sequence of Lagrange interpolation polynomials to \x\ at e-qually spaced nodes in [-1.1] diverges everywhere. except at zero and the end-points. In this paper we show tha... It is a classical result of Bernstein that the sequence of Lagrange interpolation polynomials to \x\ at e-qually spaced nodes in [-1.1] diverges everywhere. except at zero and the end-points. In this paper we show that the sequence of Lagrange interpolation polynomials corresponding to the functions which possess better smoothness on equidistant nodes in [-1.1] still diverges every -where in the interval except at zero and the end-points. 展开更多
关键词 lagrange interpolation equidistant nodes DIVERGENCE
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THE DIVERGENCE OF LAGRANGE INTERPOLATION FOR |x|~α(2<α<4) AT EQUIDISTANT NODES 被引量:3
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作者 Hui Su Shusheng Xu 《Analysis in Theory and Applications》 2006年第2期146-154,共9页
It is a classical result of Bernstein that the sequence of Lagrange interpolation polumomials to |x| at equally spaced nodes in [-1, 1] diverges everywhere, except at zero and the end-points. In the present paper, t... It is a classical result of Bernstein that the sequence of Lagrange interpolation polumomials to |x| at equally spaced nodes in [-1, 1] diverges everywhere, except at zero and the end-points. In the present paper, toe prove that the sequence of Lagrange interpolation polynomials corresponding to |x|^α (2 〈 α 〈 4) on equidistant nodes in [-1, 1] diverges everywhere, except at zero and the end-points. 展开更多
关键词 Lagrange interpolation equidistant nodes DIVERGENCE
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THE EXACT CONVERGENCE RATE AT ZERO OF LAGRANGE INTERPOLATION POLYNOMIAL TO|x|~α 被引量:2
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作者 Zhikang Lu Xifang Ge 《Analysis in Theory and Applications》 2006年第3期201-207,共7页
In this paper we present a generalized quantitative version of a result the exact convergence rate at zero of Lagrange interpolation polynomial to spaced nodes in [-1,1] due to M.Revers concerning f(x) = |x|α wit... In this paper we present a generalized quantitative version of a result the exact convergence rate at zero of Lagrange interpolation polynomial to spaced nodes in [-1,1] due to M.Revers concerning f(x) = |x|α with on equally 展开更多
关键词 Lagrange interpolation equidistant nodes CONVERGENCE
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THE DIVERGENCE OF LAGRANGE INTERPOLATION FOR |x|~a 被引量:2
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作者 Zhikang Lu Xifang Ge 《Analysis in Theory and Applications》 2005年第4期385-394,共10页
This paper shows that the sequence of Lagrange interpolation polynomials corresponding to the rune tion f(z) =|x|^α(1〈α〈2) on [-1,1] can diverge everywhere in the interval except at zero and the end-points.
关键词 lagrange interpolation polynomial equidistant nodes diverge
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