计算数学 1998, 20(1) 57-68 DOI:     ISSN: 0254-7791 CN: 11-2125/O1

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Brown方法;离散Newton法;零空间
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PubMed

解非线性方程组的一类离散的Newton算法

陈志,高旅端,邓乃扬

北京工业大学,北京工业大学,北京农业工程大学

摘要

关键词 Brown方法;离散Newton法;零空间  

A CLASS OF DISCRETIZED NEWTON METHODS FOR SOLVING SYSTEMS OF NONLINEAR EQUATIONS

Chen zhi; Gao lu-duan(Beijing Polytechnic University)Deng Nai-yang(Beijing Agricultural Engineering University)

Abstract:

This paper discusses a class of discretized Newton methods for solving systems of nonlinear equations. The number of function evaluations requred by the new discretized algorithm is about half of the classical discretized Newton method as Brown and Brent methods. The approximation given by the algorithms to F'(x) is strongly consistent. The algorithms can reduce to the Newton method when the difference stepsize h approaches to zeros but Brown and Brent methods can't do it. Numerical results show the algorithms are efficient.

Keywords: Brown method, Discrete Newton method, Null space  
收稿日期  修回日期  网络版发布日期 1998-01-14 00:00:00.0 
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