Results 11 to 20 of about 18,923 (199)

Necessary Condition for an Euler-Lagrange Equation on Time Scales [PDF]

open access: yesAbstract and Applied Analysis, 2014
We prove a necessary condition for a dynamic integrodifferential equation to be an Euler-Lagrange equation. New and interesting results for the discrete and quantum calculus are obtained as particular cases. An example of a second order dynamic equation,
Monika Dryl, Delfim F. M. Torres
doaj   +2 more sources

Generalized Stability of Euler-Lagrange Quadratic Functional Equation [PDF]

open access: yesAbstract and Applied Analysis, 2012
The main goal of this paper is the investigation of the general solution and the generalized Hyers-Ulam stability theorem of the following Euler-Lagrange type quadratic functional equation f(ax+by)+af(x-by)=(a+1)b2f(y)+a(a+1)f(x), in (β,p)-Banach space ...
Hark-Mahn Kim, Min-Young Kim
doaj   +2 more sources

Euler-Lagrange Equations of Networks with Higher-Order Elements [PDF]

open access: yesRadioengineering, 2017
The paper suggests a generalization of the classic Euler-Lagrange equation for circuits compounded of arbitrary elements from Chua’s periodic table.
Z. Biolek, D. Biolek
doaj   +2 more sources

Stability of Euler-Lagrange-Jensen’s (a,b)- Sextic Functional Equation in Multi-Banach Spaces

open access: yesInternational Journal of Analysis and Applications, 2018
In this paper, we prove the Hyers-Ulam Stability of Euler-Lagrange-Jensen’s (a,b)-Sextic Functional Equation in Multi-Banach Spaces.
John Michael Rassias   +2 more
doaj   +6 more sources

Approximate Euler-Lagrange Quadratic Mappings in Fuzzy Banach Spaces [PDF]

open access: yesAbstract and Applied Analysis, 2013
We consider general solution and the generalized Hyers-Ulam stability of an Euler-Lagrange quadratic functional equation in fuzzy Banach spaces, where , are nonzero rational numbers with , .
Hark-Mahn Kim, Juri Lee
doaj   +2 more sources

Some new discretizations of the Euler–Lagrange equation. [PDF]

open access: yes, 2021
[EN]The Veselov approach provides a discrete formulation of the Euler–Lagrange equation. To get this, a discrete Lagrangian version of a continuous one is considered and then a variational process is used.
Popescu, P.   +2 more
core   +1 more source

An efficient design for solving discrete optimal control problem with time-varying multi-delays [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2022
The focus of this article is on the study of discrete optimal control problems (DOCPs) governed by time-varying systems, including time-varying delays in control and state variables.
S.M. Abdolkhaleghzade   +2 more
doaj   +1 more source

New conservation laws of the Boussinesq and generalized Kadomtsev–Petviashvili equations via homotopy operator

open access: yesResults in Physics, 2023
According to the tools of linear algebra and calculus of variations, the conservation laws of Boussinesq and generalized Kadomtsev–Petviashvili (gKP) equations are investigated using multipliers and scaling methods. Using the Euler–Lagrange operator, the
Mehdi Jafari   +3 more
doaj   +1 more source

Fractional-Order Euler-Lagrange Equation for Fractional-Order Variational Method: A Necessary Condition for Fractional-Order Fixed Boundary Optimization Problems in Signal Processing and Image Processing

open access: yesIEEE Access, 2016
This paper discusses a novel conceptual formulation of the fractional-order Euler-Lagrange equation for the fractional-order variational method, which is based on the fractional-order extremum method. In particular, the reverse incremental optimal search
Yi-Fei Pu
doaj   +1 more source

Equation Of The Cosmological Constant From The Euler-Lagrange Equation Of Second-Order Differentiable Gravitational Field Lagrangian

open access: yes, 2023
Concepts of the variational approach are useful tools to express physical phenomena where certain quantities are conserved. Derivation of the gravitational field equations from the Euler- Lagrange equation resulting from the first-order derivative of ...
Ashraful Islam
core   +1 more source

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