Results 21 to 30 of about 641,705 (295)

A second order convergent trial method for a free boundary problem in three dimensions [PDF]

open access: yes, 2015
The present article is concerned with the solution of a generalized Bernoulli free boundary problem in three spatial dimensions. We parametrize the free boundary under consideration over the sphere and apply a trial method which updates the free boundary
Harbrecht, Helmut, Bugeanu, Monica
core   +1 more source

Optimal One-Point Iterative Function Free from Derivatives for Multiple Roots

open access: yesMathematics, 2020
We suggest a derivative-free optimal method of second order which is a new version of a modification of Newton’s method for achieving the multiple zeros of nonlinear single variable functions.
Deepak Kumar   +2 more
doaj   +1 more source

Inertial Derivative-Free Projection Method for Nonlinear Monotone Operator Equations With Convex Constraints

open access: yesIEEE Access, 2021
In this paper, we propose an inertial derivative-free projection method for solving convex constrained nonlinear monotone operator equations (CNME). The method incorporates the inertial step with an existing method called derivative-free projection (DFPI)
Auwal Bala Abubakar   +2 more
doaj   +1 more source

Second-derivative-free variant of the Chebyshev method for nonlinear equations. [PDF]

open access: yes, 2000
In this paper, we introduce a numerical method for nonlinear equations, based on the Chebyshev third-order method, in which the second-derivative operator is replaced by a finite difference between first derivatives.
Hernández, M.A. [0000-0001-5478-2958]
core   +1 more source

SEMI-LOCAL CONVERGENCE OF A DERIVATIVE-FREEMETHOD FOR SOLVING EQUATIONS

open access: yesПроблемы анализа, 2021
We present the semi-local convergence analysis of atwo-step derivative-free method for solving Banach space valuedequations. The convergence criteria are based only on the firstderivative and our idea of recurrent functions.
Gus Argyros   +3 more
doaj   +1 more source

Derivative free iterative methods for nonlinear systems

open access: yesApplied Mathematics and Computation, 2015
This research was supported by Ministerio de Ciencia y Tecnologia MTM2011-28636-C02-02 and by Vicerrectorado de Investigacion, Universitat Politecnica de Valencia PAID-SP-2012-0498 and PAID-SP-2012-0474.
Hueso Pagoaga, José Luís   +2 more
openaire   +3 more sources

On the Global Convergence of Derivative-Free Methods for Unconstrained Optimization [PDF]

open access: yesSIAM Journal on Optimization, 2002
This paper establishes a general convergence theory for unconstrained optimization without derivatives. The authors present new globally convergent algorithms which combine pattern and line search approaches.
LUCIDI, Stefano, M. SCIANDRONE
openaire   +5 more sources

On Derivative Free Multiple-Root Finders with Optimal Fourth Order Convergence

open access: yesMathematics, 2020
A number of optimal order multiple root techniques that require derivative evaluations in the formulas have been proposed in literature. However, derivative-free optimal techniques for multiple roots are seldom obtained.
Janak Raj Sharma   +2 more
doaj   +1 more source

Semi-Local Convergence of Two Derivative-Free Methods of Order Six for Solving Equations under the Same Conditions

open access: yesFoundations, 2022
We propose the semi-local convergence of two derivative-free, competing methods of order six to address non-linear equations. The sufficient convergence criteria are the same, making a direct comparison between them possible.
Ioannis K. Argyros   +3 more
doaj   +1 more source

An Algorithm Derivative-Free to Improve the Steffensen-Type Methods

open access: yesSymmetry, 2021
Solving equations of the form H(x)=0 is one of the most faced problem in mathematics and in other science fields such as chemistry or physics. This kind of equations cannot be solved without the use of iterative methods. The Steffensen-type methods, defined using divided differences are derivative free, are usually considered to solve these problems ...
Miguel Ángel Hernández-Verón   +4 more
openaire   +4 more sources

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