Results 1 to 10 of about 1,347,601 (289)

Variational Approach to the Lane–Emden Equation [PDF]

open access: yesApplied Mathematics and Computation, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ji-Huan He
exaly   +4 more sources

Variational iteration algorithm-I with an auxiliary parameter for wave-like vibration equations

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
In this work, the variational iteration algorithm-I with an auxiliary parameter is used for the analytical treatment of the wave equations and wave-like vibration equations.
Hijaz Ahmad, Tufail A. Khan
doaj   +2 more sources

Nonpotentiality of a diffusion system and the construction of a semi-bounded functional [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
The wide prevalence and the systematic variational principles are used in mathematics and applications due to a series of remarkable consequences among which the possibility to establish the existence of the solutions of the initial equations ...
V.M. Savchin, L.T. Huyen
doaj   +3 more sources

Speeded search of the periodic processes of dynamical systems

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2016
Modelling of periodic processes of electromagnetic devices is a complex problem. The task of finding of periodic solutions of nonlinear differential equations is more complex than the Cauchy task of integrating of these equations because it imposes ...
Олександр Леонідович Шпак
doaj   +7 more sources

Differential inequality and non-oscillation of fourth order differential equation [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
The oscillatory theory of fourth order differential equations has not yet been developed well enough. Theresults are known only for the case when the coefficients of differential equations are power functions.
A.A. Kalybay, A.O. Baiarystanov
doaj   +2 more sources

Variational homotopy perturbation method for solving systems of homogeneous linear and nonlinear partial differential equations

open access: yesDesimal, 2021
The variational homotopy perturbation method is developed by combining variational iteration method and homotopy perturbation method. Variational iteration method has an efficient process in solving a wide variety of equations and systems of equations ...
Atika Faradilla   +3 more
doaj   +1 more source

Solutions of (2+1)-D & (3+1)-D Burgers Equations by New Laplace Variational Iteration Technique

open access: yesAxioms, 2023
The new Laplace variational iterative method is used in this research for solving the (2+1)-D and (3+1)-D Burgers equations. This technique relies on the modified variational iteration method and the Laplace transform.
Gurpreet Singh   +4 more
doaj   +1 more source

Variations for Some Painlevé Equations [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2019
This paper first discusses irreducibility of a Painlevé equation $P$. We explain how the Painlevé property is helpful for the computation of special classical and algebraic solutions. As in a paper of Morales-Ruiz we associate an autonomous Hamiltonian $\mathbb{H}$ to a Painlevé equation $P$.
Acosta-Humañez, Primitivo B.   +2 more
openaire   +4 more sources

Stability of Difference Equations and Applications to Robustness Problems

open access: yesAdvances in Difference Equations, 2010
The aim of this paper is to obtain new necessary and sufficient conditions for the uniform exponential stability of variational difference equations with applications to robustness problems.
Bogdan Sasu
doaj   +2 more sources

A variational approach to the shock structure problem [PDF]

open access: yesTheoretical and Applied Mechanics, 2005
A variational approach to the shock structure problem is proposed. The set of governing equations, consisted of n first-order ordinary differential equations accompanied with 2n boundary conditions at ±∞, is put into variational form by means of least ...
Simić Srboljub S.
doaj   +1 more source

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