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21.
Paulo Sad 《Bulletin of the Brazilian Mathematical Society》1995,26(1):47-56
Given a holomorphic foliation of the 2-dimensional projective space, sufficient conditions are given in order to be the pull back of a linear foliation by a rational map. 相似文献
22.
23.
Sergio Amat Ioannis K. Argyros Sonia Busquier Saïd Hilout 《Journal of Optimization Theory and Applications》2014,161(3):837-852
We propose a collection of hybrid methods combining Newton’s method with frozen derivatives and a family of high-order iterative schemes. We present semilocal convergence results for this collection on a Banach space setting. Using a more precise majorizing sequence and under the same or weaker convergence conditions than the ones in earlier studies, we expand the applicability of these iterative procedures. 相似文献
24.
We introduce the new idea of recurrent functions to provide a new semilocal convergence analysis for Newton-type methods,
under mild differentiability conditions. It turns out that our sufficient convergence conditions are weaker, and the error
bounds are tighter than in earlier studies in some interesting cases (Chen, Ann Inst Stat Math 42:387–401, 1990; Chen, Numer Funct Anal Optim 10:37–48, 1989; Cianciaruso, Numer Funct Anal Optim 24:713–723, 2003; Cianciaruso, Nonlinear Funct Anal Appl 2009; Dennis 1971; Deuflhard 2004; Deuflhard, SIAM J Numer Anal 16:1–10, 1979; Gutiérrez, J Comput Appl Math 79:131–145, 1997; Hernández, J Optim Theory Appl 109:631–648, 2001; Hernández, J Comput Appl Math 115:245–254, 2000; Huang, J Comput Appl Math 47:211–217, 1993; Kantorovich 1982; Miel, Numer Math 33:391–396, 1979; Miel, Math Comput 34:185–202, 1980; Moret, Computing 33:65–73, 1984; Potra, Libertas Mathematica 5:71–84, 1985; Rheinboldt, SIAM J Numer Anal 5:42–63, 1968; Yamamoto, Numer Math 51: 545–557, 1987; Zabrejko, Numer Funct Anal Optim 9:671–684, 1987; Zinc̆ko 1963). Applications and numerical examples, involving a nonlinear integral equation of Chandrasekhar-type, and a differential
equation are also provided in this study. 相似文献
25.
We study a class of Steffensen-type algorithm for solving nonsmooth variational inclusions in Banach spaces. We provide a local convergence analysis under ω-conditioned divided difference, and the Aubin continuity property. This work on the one hand extends the results on local convergence of Steffensen’s method related to the resolution of nonlinear equations (see Amat and Busquier in Comput. Math. Appl. 49:13–22, 2005; J. Math. Anal. Appl. 324:1084–1092, 2006; Argyros in Southwest J. Pure Appl. Math. 1:23–29, 1997; Nonlinear Anal. 62:179–194, 2005; J. Math. Anal. Appl. 322:146–157, 2006; Rev. Colomb. Math. 40:65–73, 2006; Computational Theory of Iterative Methods, 2007). On the other hand our approach improves the ratio of convergence and enlarges the convergence ball under weaker hypotheses than one given in Hilout (Commun. Appl. Nonlinear Anal. 14:27–34, 2007). 相似文献
26.
We provide a local convergence analysis for Newton–Steffensen-type algorithm for solving nonsmooth perturbed variational inclusions in Banach spaces. Under new center–conditions and the Aubin continuity property, we obtain the linear local convergence of Newton–Steffensen method. Our results compare favorably with related obtained in (Argyros and Hilout, 2007 submitted; Hilout in J. Math. Anal. Appl. 339:753–761, 2008). 相似文献
27.
Ioannis K. Argyros Saïd Hilout 《Nonlinear Analysis: Theory, Methods & Applications》2010,72(9-10):3857-3864
We present new results for the local convergence of the Newton-like method to a unique solution of nondifferentiable variational inclusions in a Banach space setting using the Lipschitz-like property of set-valued mappings and the concept of slant differentiability hypothesis on the operator involved, as was introduced by X. Chen, Z. Nashed and L. Qi. The linear convergence of the Newton-like method is also established. Our results extend the applicability of the Newton-like method (Argyros and Hilout, 2009 [5] and Chen, Nashed and Qi, 2000 [7]) to variational inclusions. 相似文献
28.
We introduce the new idea of recurrent functions to provide a semilocal convergence analysis for an inexact Newton-type method, using outer inverses. It turns out that our sufficient convergence conditions are weaker than in earlier studies in many interesting cases (Argyros, 2004 [5] and [6], Argyros, 2007 [7], Dennis, 1971 [14], Deuflhard and Heindl, 1979 [15], Gutiérrez, 1997 [16], Gutiérrez et al., 1995 [17], Häubler, 1986 [18], Huang, 1993 [19], Kantorovich and Akilov, 1982 [20], Nashed and Chen, 1993 [21], Potra, 1982 [22], Potra, 1985 [23]). 相似文献
29.
We introduce a new iterative method in order to approximate a locally unique solution of variational inclusions in Banach
spaces. The method uses only divided differences operators of order one. An existence–convergence theorem and a radius of
convergence are given under some conditions on divided difference operator and Lipschitz-like continuity property of set-valued
mappings. Our method extends the recent work related to the resolution of nonlinear equation in Argyros (J Math Anal Appl
332:97–108, 2007) and has the following advantages: faster convergence to the solution than all the previous known ones in Argyros and Hilout
(Appl Math Comput, 2008 in press), Hilout (J Math Anal Appl 339:53–761, 2008, Positivity 10:673–700, 2006), and we do not need to evaluate any Fréchet derivative. We provide also an improvement of the ratio of our algorithm under
some center-conditions and less computational cost. Numerical examples are also provided.
相似文献
30.
We present a Kantorovich-type semilocal convergence analysis of the Newton–Josephy method for solving a certain class of variational
inequalities. By using a combination of Lipschitz and center-Lipschitz conditions, and our new idea of recurrent functions,
we provide an analysis with the following advantages over the earlier works (Wang 2009, Wang and Shen, Appl Math Mech 25:1291–1297, 2004) (under the same or less computational cost): weaker sufficient convergence conditions, larger convergence domain, finer
error bounds on the distances involved, and an at least as precise information on the location of the solution. 相似文献