史应光.基于xL(a)n-1(x)之零点的(0,1,…,m-2,m)插值[J].数学研究及应用,1995,15(3):319~328 |
基于xL(a)n-1(x)之零点的(0,1,…,m-2,m)插值 |
(0, 1, … ,m - 2, m) Interpolation on the Zeros of xL(a)n-1(x) |
投稿时间:1993-07-25 |
DOI:10.3770/j.issn:1000-341X.1995.03.001 |
中文关键词: |
英文关键词:Birkhoff interpolation Laguerre Polynomial regularity. |
基金项目: |
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中文摘要: |
本文给出了基于xL(a)n-1(x)之零点的(0,1,…,m-2,m)插值的正则性的充要条件,其中xL(a)n-1(x)为(n-1)次Laguerre多项式。同时基函数(若存在的话)的明显表达式也在文中给出。再者,还证明了,若该插值问题有无穷多个解,则其解的一般形式为f0(x)+Cf1(x)这里C为任意常数。 |
英文摘要: |
A necessary and sufficient condition for regularity of (0, 1, …, m - 2, m) in-terpolation on the zeros of xL(a)n-1(x)(a>-1 ) in a nianagealbe form is established, where xL(a)n-1(x) is the (n-1)- th Laguerre polynomial . Meanwhile, the explicit representationof the fundamental polynomials, when they exist, is given. Moreover, we show that if theproblem of (0, 1, …, m - 2, m) interpolation has an infinity of solutions then the generalform of the solutions is f0(x)+Cf1(x) with an arbitrary constant C. |
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