Deformed super-Halley’s iteration in Banach spaces and its local and semilocal convergence
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Deformed super-Halley’s iteration for nonlinear equations is studied in Banach spaces with its local and semilocal convergence. The local convergence is established under Hölder continuous first Fréchet derivative. A theorem for the existence and uniqueness of solution is provided and the radii of convergence balls are obtained. For semilocal convergence, the second order Fréchet derivative is Hölder continuous. The Hölder continuous first Fréchet derivative is not used as it leads to lower R-order of convergence. Recurrence relations depending on two parameters are obtained. A theorem for the existence and uniqueness along with the estimation of bounds on errors is also established. The R-order convergence comes out to be \((2+p), p \in (0,1]\). Nonlinear integral equations and a variety of numerical examples are solved to demonstrate our work.
KeywordsSuper-Halley’s method Derivative of Fréchet Majorizing function Recurrence relations
Mathematics Subject Classification15A09 65F05 65F35
Funding was provided by Amrita Vishwa Vidyapeetham University, Indian Institute of Technology Kharagpur.
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