Results 21 to 30 of about 464,112 (279)

Lie symmetries of nonlinear boundary value problems [PDF]

open access: yes, 2012
Nonlinear boundary value problems (BVPs) by means of the classical Lie symmetry method are studied. A new definition of Lie invariance for BVPs is proposed by the generalization of existing those on much wider class of BVPs.
Alexiades   +43 more
core   +1 more source

A Full Multigrid Method for Nonlinear Eigenvalue Problems

open access: yes, 2015
This paper is to introduce a type of full multigrid method for the nonlinear eigenvalue problem. The main idea is to transform the solution of nonlinear eigenvalue problem into a series of solutions of the corresponding linear boundary value problems on ...
Jia, Shanghui   +3 more
core   +1 more source

A maximum principle for a fractional boundary value problem with convection term and applications

open access: yesMathematical Modelling and Analysis, 2019
We consider a fractional boundary value problem with Caputo-Fabrizio fractional derivative of order 1 < α < 2 We prove a maximum principle for a general linear fractional boundary value problem.
Mohammed Al-Refai, Kamal Pal
doaj   +1 more source

Lie and conditional symmetries of a class of nonlinear (1+2)-dimensional boundary value problems

open access: yes, 2014
A new definition of conditional invariance for boundary value problems involving a wide range of boundary conditions (including initial value problems as a special case) is proposed.
Cherniha, Roman, King, John R
core   +2 more sources

Solvability for a nonlinear third-order three-point boundary value problem

open access: yesUniversal Journal of Mathematics and Applications, 2018
In this article, the existence of positive solutions for a nonlinear third-order three-point boundary value problem with integral condition is investigated.
Djourdem Habib, Slimane Benaicha
doaj   +1 more source

A boundary value problem for a non-linear difference equation [PDF]

open access: yesArchives of Control Sciences
A boundary value problem for a non-linear difference equation of order three is considered. We show that this equation can be interpreted as the equation satisfied by the value function in a stochastic optimal control problem.
Mario Lefebvre
doaj   +1 more source

Multiple Positive Solutions of Nonlinear Boundary Value Problem for Finite Fractional Difference

open access: yesAbstract and Applied Analysis, 2014
We consider a discrete fractional nonlinear boundary value problem in which nonlinear term f is involved with the fractional order difference. And we transform the fractional boundary value problem into boundary value problem of integer order difference
Yansheng He, Mingzhe Sun, Chengmin Hou
doaj   +1 more source

The existence of solutions for nonlinear fractional boundary value problem and its Lyapunov-type inequality involving conformable variable-order derivative

open access: yesJournal of Inequalities and Applications, 2020
We consider a nonlinear fractional boundary value problem involving conformable variable-order derivative with Dirichlet conditions. We prove the existence of solutions to the considered problem by using the upper and lower solutions’ method with ...
Jie Wang, Shuqin Zhang
doaj   +1 more source

A periodic boundary value problem with switchings under nonlinear perturbations

open access: yesBoundary Value Problems, 2023
We investigate the existence of solutions of weakly nonlinear periodic boundary value problems for systems of ordinary differential equations with switchings and the construction of these solutions.
Peter Benner   +2 more
doaj   +1 more source

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