Period-doubling bifurcations in the family of Chebyshev-Halley-type methods

被引:5
作者
Cordero, Alicia [1 ]
Torregrosa, Juan R. [1 ]
Vindel, P. [2 ]
机构
[1] Univ Politecn Valencia, Inst Matemat Multidisciplinar, E-46071 Valencia, Spain
[2] Univ Jaume 1, Inst Matemat & Aplicac Castellon, Castellon de La Plana, Spain
关键词
numerical methods; Chebyshev-Halley methods; bifurcations; dynamics of numerical method; period-doubling bifurcation; 37F10; 37G15; ITERATIVE METHODS; DYNAMICS;
D O I
10.1080/00207160.2012.745518
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The choice of a member of a parametric family of iterative methods is not always easy. The family of Chebyshev-Halley schemes is a good example of it. The analysis of bifurcation points of this family allows us to define a real interval in which there exist several problematic behaviours: attracting points that become doubled, other ones that become periodic orbits, etc. These aspects should be avoided in an iterative procedure, so it is important to determine the regions where this conduct takes place. In this paper, we obtain that this family admits attractive 2-cycles in two different intervals, for real values of the parameter.
引用
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页码:2061 / 2071
页数:11
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