数学毕业论文-什么样的连续函数能由整系数多项式逼近

时间:2024-09-20 17:18:57 来源:作文网 作者:管理员

什么样的连续函数能由整系数多项式逼近

摘要:本文主要译自[1],它系统地讨论了什么样的连续函数能由整系数多项式逼近,有以下两种情形:

(1)区间长度大于等于4的区间上,能由整系数多项式逼近的连续函数是这些整系数多项式本身;

(2)在区间长度严格小于4的区间 上,连续函数 能被整系数多项式1致逼近当且仅当 在 插值多项式为整系数多项式.

关键词:逼近;整系数多项式;插值多项式;代数整数.

What Can Be Approximated by Polynomials with Integer Coefficients

Abstract: This article is mainly translated from [1].What can be approximated by polynomials with integer coefficients is given in the following two aspects:

If the interval has length four or more than the only functions that are approximable on the interval by polynomials with integer coefficients are these polynomials themselves.

If is a continuous function on an interval I of length strictly less then 4,then is approximable on the interval by polynomials with integer coefficients if and only if its interpolating polynomial on has integer coefficients.

Keywords: approximation; polynomial with integer coefficients; interpolating polynomial; algebraic integer.

目 录

中文摘要 …………………………………………………………………………………………1

英文摘要 …………………………………………………………&hellกip;……………………………1

前言 ………………………………………………………………………………………………2

1 1些符号与专用术语………&h¿ellip;………………………………………………………………2

2 区间长度大于等于4时整系数多项式逼近问题………………………………………………2

3 区间 与 上的整系数多项式逼近问题 ………………………………………………………4

4 区间长度小于4时的整系数多项式逼近问题…………………………………………………9

4.1代数整数及其相关概念 ………………………………………………………………………10

4.2插值多项式 ……………&ลhellip;……………………………………………………&hฬellip;……………10

5 结束语 …………………………………………………………………………………………15

6 参考文献 ………………………………………&hellip ☺;……………………………………………16

【包括:毕业论文开题报告、任务书】

【说明:论文中有些数学符号是编辑器编辑而成,网页上无法显示或者显示格式错误,给您带来不便请谅解。】


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