Results 51 to 60 of about 345,162 (102)

ON FINDING THE COEFFICIENTS OF DERIVATIVE IN THE STRING VIBRATION EQUAION WHICH HAS DISCONTINUITY

open access: yesМіжнародний науково-технічний журнал "Проблеми керування та інформатики"
It is studied the problem of finding the coefficient of first order derivative in the string vibration equation. Considering problem is reduced to the optimal control problem.
Сафарова Сафарова
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 approximate Taylor method for Stochastic Functional Differential Equations via polynomial condition

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2021
The subject of this paper is an analytic approximate method for a class of stochastic functional differential equations with coefficients that do not necessarily satisfy the Lipschitz condition nor linear growth condition but they satisfy some polynomial
Djordjević Dušan D.   +1 more
doaj   +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

The angular derivative of Fréchet-holomorphic maps in J*-algebras and complex Hilbert spaces

open access: yes, 1988
We study the problem of the existence of the angular derivative of Fréchet-holomorphic maps of the generalized right half-planes defined by non-zero partial isometries in infinite dimensional complex Banach spaces called J*-algebras.
Wjodarczyk, Kazimierz
core   +1 more source

FRÉCHET-MARINESCU’S DERIVATIVE IN THE MATHEMATICAL MODELING OF DYNAMIC SYSTEMS [PDF]

open access: yesFiabilitate şi Durabilitate, 2013
The paper presents an application of the functional analysis, especially of differentialcalculus in linear topological locally convex spaces leading to formulae representing the evolution ofstates in dynamical systems with infinite fading ...
Eufrosina OTLACAN
doaj  

Local Convergence Analysis of an Efficient Fourth Order Weighted-Newton Method under Weak Conditions

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
Local convergence analysis of a fourth order method considered by Sharma et. al in [19] for solving systems of nonlinear equations. Using conditions on derivatives upto the order five, they proved that the method is of order four.
Argyros Ioannis K., George Santhosh
doaj   +1 more source

On bifurcation points of strongly condensing operators

open access: yesНаучный вестник МГТУ ГА, 2016
Two conditions equivalent to complete continuity of Frechet derivative at a point and the asymptotic derivative in the case of their existence are given. Theorem of M.A. Krasnosel’skii on asymptotic bifurcation points for completely con-tinuous fields to
N. A. Erzakova
doaj  

Local convergence of inexact Newton methods under affine invariant conditions and hypotheses on the second Fréchet derivative [PDF]

open access: yes, 1999
We use inexact Newton iterates to approximate a solution of a nonlinear equation in a Banach space. Solving a nonlinear equation using Newton iterates at each stage is very expensive in general.
Argyros, Ioannis
core  

Pseudo-Derivative and Pseudo-Integral of Fractional Order

open access: yesJournal of Mathematical Extension, 2014
Integral and differential of fractional order are important notion that is often used in dealing with Frechet geometry. Based on pseudo-operations given by monotone and continuous function g, we study pseudo-derivative and pseudo-integral of ...
A. Zohri∗, Sh. Jamshidzadeh
doaj  

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