Results 21 to 30 of about 1,528,330 (141)

Convergence Analysis and Complex Geometry of an Efficient Derivative-Free Iterative Method

open access: yesMathematics, 2019
To locate a locally-unique solution of a nonlinear equation, the local convergence analysis of a derivative-free fifth order method is studied in Banach space.
Deepak Kumar   +2 more
doaj   +1 more source

On the Numerical Solution of a Hyperbolic Inverse Boundary Value Problem in Bounded Domains

open access: yesMathematics, 2022
We consider the inverse problem of reconstructing the boundary curve of a cavity embedded in a bounded domain. The problem is formulated in two dimensions for the wave equation.
Roman Chapko, Leonidas Mindrinos
doaj   +1 more source

A Block Krylov Method to Compute the Action of the Fréchet Derivative of a Matrix Function on a Vector with Applications to Condition Number Estimation

open access: yesSIAM Journal on Scientific Computing, 2017
We design a block Krylov method to compute the action of the Frechet derivative of a matrix function on a vector using only matrix-vector products, i.e., the derivative of $f(A)b$ when $A$ is subject to a perturbation in the direction $E$.
Peter Kandolf, Samuel D. Relton
semanticscholar   +1 more source

Local convergence of a multi-step high order method with divided differences under hypotheses on the first derivative

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2017
This paper is devoted to the study of a multi-step method with divided differences for solving nonlinear equations in Banach spaces. In earlier studies, hypotheses on the Fréchet derivative up to the sixth order of the operator under consideration is ...
Ioannis K. Argyros, Santhosh George
doaj   +1 more source

Convergence Analysis and Dynamical Nature of an Efficient Iterative Method in Banach Spaces

open access: yesMathematics, 2021
We study the local convergence analysis of a fifth order method and its multi-step version in Banach spaces. The hypotheses used are based on the first Fréchet-derivative only. The new approach provides a computable radius of convergence, error bounds on
Deepak Kumar   +3 more
doaj   +1 more source

Semilocal and local convergence of a fifth order iteration with Fréchet derivative satisfying Hölder condition

open access: yesApplied Mathematics and Computation, 2016
The semilocal and local convergence in Banach spaces is described for a fifth order iteration for the solutions of nonlinear equations when the Frechet derivative satisfies the Holder condition.
Sukhjit Singh   +3 more
semanticscholar   +1 more source

Classical Continuous Constraint Boundary Optimal Control Vector Problem for Triple Nonlinear Parabolic System

open access: yesAl-Mustansiriyah Journal of Science, 2023
In this paper, our purpose is to study the classical continuous constraints boundary optimal triple control vector problem dominating nonlinear triple parabolic boundary value problem.
Yasameen H. Rashid   +2 more
doaj   +1 more source

Some results for Volterra integro-differential equations depending on derivative in unbounded domains

open access: yesRatio Mathematica, 2019
In this paper we study the existence of continuous solutions of an integro-differential equation in unbounded interval depending on derivative This paper extend some results obtained by the authors using the technique developed in their previous paper ...
Giuseppe Anichini   +2 more
doaj   +1 more source

An Extension on the Local Convergence for the Multi-Step Seventh Order Method with ψ-Continuity Condition in the Banach Spaces

open access: yesFractal and Fractional, 2022
The local convergence analysis of the multi-step seventh order method to solve nonlinear equations is presented in this paper. The point of this paper is that our proposed study requires a weak hypothesis where the Fréchet derivative of the nonlinear ...
Mohammad Taghi Darvishi   +4 more
doaj   +1 more source

A Newton-like Midpoint Method for Solving Equations in Banach Space

open access: yesFoundations, 2023
The present paper includes the local and semilocal convergence analysis of a fourth-order method based on the quadrature formula in Banach spaces. The weaker hypotheses used are based only on the first Fréchet derivative.
Samundra Regmi   +3 more
doaj   +1 more source

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