Results 1 to 10 of about 29,648 (194)

A modification fractional variational iteration method for solving nonlinear gas dynamic and coupled KdV equations involving local fractional operators

open access: yesThermal Science, 2018
In this paper, we apply a new technique, namely local fractional variational iteration transform method on homogeneous/non-homogeneous non-linear gas dynamic and coupled KdV equations to obtain the analytical approximate solutions. The iteration procedure is based on local fractional derivative and integral operators.
Dumitru Baleanu   +2 more
openaire   +4 more sources

Solving Composite Fixed Point Problems with Block Updates

open access: yesAdvances in Nonlinear Analysis, 2021
Various strategies are available to construct iteratively a common fixed point of nonexpansive operators by activating only a block of operators at each iteration.
Combettes Patrick L., Glaudin Lilian E.
doaj   +1 more source

Nonlinear Equations Involving Nonpositive Definite Linear Operators via Variational Methods

open access: yesJournal of Integral Equations and Applications, 2007
The paper is concerned with the application of variational methods, namely the variational method due to \textit{B. Ricceri} [J. Comput. Appl. Math. 113, No. 1--2, 401--410 (2000; Zbl 0946.49001)] in showing the existence of solutions for nonlinear equations of the type \(u=K\mathbf{f}(u)\), where \(K:L^{q_{0}}( \Omega) \rightarrow L^{p_{0}}( \Omega) \)
ANELLO, Giovanni, CORDARO G.
openaire   +5 more sources

A Fractional Calculus of Variations for Multiple Integrals with Application to Vibrating String [PDF]

open access: yes, 2010
We introduce a fractional theory of the calculus of variations for multiple integrals. Our approach uses the recent notions of Riemann-Liouville fractional derivatives and integrals in the sense of Jumarie. Main results provide fractional versions of the
Almeida, Ricardo   +2 more
core   +4 more sources

Fractional Euler-Lagrange differential equations via Caputo derivatives [PDF]

open access: yes, 2011
We review some recent results of the fractional variational calculus. Necessary optimality conditions of Euler-Lagrange type for functionals with a Lagrangian containing left and right Caputo derivatives are given.
AA Kilbas   +29 more
core   +3 more sources

Perturbation results for some nonlinear equations involving fractional operators [PDF]

open access: yes, 2012
By using a perturbation technique in critical point theory, we prove the existence of solutions for two types of nonlinear equations involving fractional differential operators.Comment: 14 ...
Secchi, Simone
core   +2 more sources

Numerical solution of fractional Sturm-Liouville equation in integral form [PDF]

open access: yes, 2014
In this paper a fractional differential equation of the Euler-Lagrange / Sturm-Liouville type is considered. The fractional equation with derivatives of order $\alpha \in \left( 0,1 \right]$ in the finite time interval is transformed to the integral form.
Blaszczyk, Tomasz, Ciesielski, Mariusz
core   +1 more source

Weak imposition of Signorini boundary conditions on the boundary element method [PDF]

open access: yes, 2020
We derive and analyse a boundary element formulation for boundary conditions involving inequalities. In particular, we focus on Signorini contact conditions.
Burman, Erik   +2 more
core   +1 more source

Variational methods in relativistic quantum mechanics

open access: yes, 2007
This review is devoted to the study of stationary solutions of linear and nonlinear equations from relativistic quantum mechanics, involving the Dirac operator. The solutions are found as critical points of an energy functional. Contrary to the Laplacian
Esteban, Maria J.   +2 more
core   +2 more sources

Nonlinear equations involving the square root of the Laplacian

open access: yes, 2018
In this paper we discuss the existence and non-existence of weak solutions to parametric fractional equations involving the square root of the Laplacian $A_{1/2}$ in a smooth bounded domain $\Omega\subset \mathbb{R}^n$ ($n\geq 2$) and with zero Dirichlet
Ambrosio, Vincenzo   +2 more
core   +3 more sources

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