Results 51 to 60 of about 99,243 (193)

A Note on Multidimensional Sumudu-Generalized Laplace Decomposition Method and Singular Pseudo-Hyperbolic Equations

open access: yesJournal of Function Spaces
The objective of this research is to establish an effective methodology for addressing specific linear, nonlinear, singular n+1-dimensional fractional pseudo-hyperbolic equations via the use of the multi-Sumudu and generalized Laplace transforms combined
Hassan Eltayeb, Said Mesloub
doaj   +1 more source

An analytical method for solving exact solutions of the nonlinear Bogoyavlenskii equation and the nonlinear diffusive predator–prey system

open access: yesAlexandria Engineering Journal, 2016
In this article, we apply the exp(-Φ(ξ))-expansion method to construct many families of exact solutions of nonlinear evolution equations (NLEEs) via the nonlinear diffusive predator–prey system and the Bogoyavlenskii equations.
Md. Nur Alam, Cemil Tunc
doaj   +1 more source

A parabolic-hyperbolic free boundary problem modeling tumor growth with drug application

open access: yesElectronic Journal of Differential Equations, 2010
In this article, we study a free boundary problem modeling the growth of tumors with drug application. The model consists of two nonlinear second-order parabolic equations describing the diffusion of nutrient and drug concentration, and three ...
Ji-Hong Zhao
doaj  

Boundary Value Problems for Mixed Type Equations and Applications

open access: yes, 2011
In this paper we outline a general method for finding well-posed boundary value problems for linear equations of mixed elliptic and hyperbolic type, which extends previous techniques of Berezanskii, Didenko, and Friedrichs.
Khuri, Marcus A.
core   +1 more source

The system of equations for the ion sound and Langmuir waves and its new exact solutions

open access: yesResults in Physics, 2018
The present study deals with the system of equations for the ion sound and Langmuir waves (SEISLWs). Distinct integration schemes, including the modified Kudraysov method (MKM) and the hyperbolic function method (HFM) with the help of symbolic ...
Aly R. Seadawy   +3 more
doaj   +1 more source

Existence and number of solutions to semilinear equations with applications to boundary-value problems

open access: yesElectronic Journal of Differential Equations, 2000
solutions to nonlinear equations and to (non)resonant semilinear equations involving nonlinear perturbations of Fredholm maps of index zero. We apply our results to semilinear elliptic, and to semilinear parabolic and hyperbolic periodic boundary-value ...
P. S. Milojevic
doaj  

Kirchhoff equations in generalized Gevrey spaces: local existence, global existence, uniqueness [PDF]

open access: yes, 2009
In this note we present some recent results for Kirchhoff equations in generalized Gevrey spaces. We show that these spaces are the natural framework where classical results can be unified and extended.
Ghisi, Marina, Gobbino, Massimo
core   +2 more sources

A non-linear Oscillator with quasi-Harmonic behaviour: two- and $n$-dimensional Oscillators

open access: yes, 2004
A nonlinear two-dimensional system is studied by making use of both the Lagrangian and the Hamiltonian formalisms. The present model is obtained as a two-dimensional version of a one-dimensional oscillator previously studied at the classical and also at ...
Ballesteros A   +33 more
core   +1 more source

Series Solutions of Time-Fractional PDEs by Homotopy Analysis Method

open access: yesDifferential Equations and Nonlinear Mechanics, 2008
The homotopy analysis method (HAM) is applied to solve linear and nonlinear fractional partial differential equations (fPDEs). The fractional derivatives are described by Caputo's sense. Series solutions of the fPDEs are obtained.
O. Abdulaziz, I. Hashim, A. Saif
doaj   +1 more source

On nonlinear stabilization of linearly unstable maps

open access: yes, 2017
We examine the phenomenon of nonlinear stabilization, exhibiting a variety of related examples and counterexamples. For G\^ateaux differentiable maps, we discuss a mechanism of nonlinear stabilization, in finite and infinite dimensions, which applies in ...
Gallay, Thierry   +2 more
core   +2 more sources

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