Results 21 to 30 of about 1,072,002 (279)

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

Derivative free iterative simultaneous method for finding distinct roots of polynomial equation

open access: yesAlexandria Engineering Journal, 2020
In this article, we present a new derivative free simultaneous method for determining in particular all the distinct roots of polynomial equation. A modification in Weierstrass correction is used to construct tenth order derivative free simultaneous ...
Nazir Ahmad Mir   +4 more
doaj   +1 more source

Some efficient seventh-order derivative-free families in root-finding [PDF]

open access: yesOpuscula Mathematica, 2013
The interest in efficient root-finding iterations is nowadays growing and influenced by the widespread use of high-speed computers. On the other hand, the calculation of derivatives is often hard, when the problems are formulated in terms of nonlinear ...
Fazlollah Soleymani
doaj   +1 more source

Derivative-Free Kurchatov-Type Accelerating Iterative Method for Solving Nonlinear Systems: Dynamics and Applications

open access: yesFractal and Fractional, 2022
Two novel Kurchatov-type first-order divided difference operators were designed, which were used for constructing the variable parameter of three derivative-free iterative methods. The convergence orders of the new derivative-free methods are 3, (5+17)/2≈
Xiaofeng Wang, Xiaohe Chen
doaj   +1 more source

Two-dimensional Black Holes in a Higher Derivative Gravity and Matrix Model [PDF]

open access: yes, 2007
We construct perturbatively a class of charged black hole solutions in type 0A string theory with higher derivative terms. They have extremal limit, where the solution interpolates smoothly between near horizon AdS_2 geometry and the asymptotic linear ...
Aharony   +31 more
core   +1 more source

Derivative-free optimization and filter methods to solve nonlinear constrained problems [PDF]

open access: yes, 2009
In real optimization problems, usually the analytical expression of the objective function is not known, nor its derivatives, or they are complex. In these cases it becomes essential to use optimization methods where the calculation of the derivatives,
Correia, Aldina   +3 more
core   +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

Wedge trust region methods for derivative free optimization [PDF]

open access: yesMathematical Programming, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marazzi, Marcelo, Nocedal, Jorge
openaire   +1 more source

Convergence of Derivative-Free Iterative Methods with or without Memory in Banach Space

open access: yesFoundations, 2023
A method without memory as well as a method with memory are developed free of derivatives for solving equations in Banach spaces. The convergence order of these methods is established in the scalar case using Taylor expansions and hypotheses on higher ...
Santhosh George   +2 more
doaj   +1 more source

Improving Temporal Accuracy of Human Metabolic Chambers for Dynamic Metabolic Studies [PDF]

open access: yes, 2018
Metabolic chambers are powerful tools for assessing human energy expenditure, providing flexibility and comfort for the subjects in a near free-living environment.
Celi, Francesco S.   +5 more
core   +4 more sources

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