A Newton-like method in Banach spaces under mild differentiability conditions
Gupta, Dharmendra K. ; Parida, Pradip K.
Kodai Math. J., Tome 31 (2008) no. 1, p. 414-430 / Harvested from Project Euclid
The aim of this paper is to discuss the convergence of a third order Newton-like method for solving nonlinear equations F(x) = 0 in Banach spaces by using recurrence relations. The convergence of the method is established under the assumption that the second Fréchet derivative of F being ω-continuous given by ||F″(x)-F″(y)|| ≤ ω (||x - y||), x, y $\in$ Ω, where ω be a nondecreasing function on R+ and Ω any open set. This ω-continuity condition is milder than the usual Lipschitz/Hölder continuity condition. To get a priori error bounds, a family of recurrence relations based on two parameters depending on the operator F is also derived. Two numerical examples are worked out to show that the method is successful even in cases where Lipschitz/Hölder continuity condition fails but ω-continuity condition is satisfied. In comparison to the work of Wu and Zhao [15], our method is more general and leads to better results.
Publié le : 2008-10-15
Classification: 
@article{1225980445,
     author = {Gupta, Dharmendra K. and Parida, Pradip K.},
     title = {A Newton-like method in Banach spaces under mild differentiability conditions},
     journal = {Kodai Math. J.},
     volume = {31},
     number = {1},
     year = {2008},
     pages = { 414-430},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1225980445}
}
Gupta, Dharmendra K.; Parida, Pradip K. A Newton-like method in Banach spaces under mild differentiability conditions. Kodai Math. J., Tome 31 (2008) no. 1, pp.  414-430. http://gdmltest.u-ga.fr/item/1225980445/