Results 51 to 60 of about 387,114 (225)

Similarity solutions of Reaction-Diffusion equation with space- and time-dependent diffusion and reaction terms

open access: yes, 2015
We consider solvability of the generalized reaction-diffusion equation with both space- and time-dependent diffusion and reaction terms by means of the similarity method.
Ho, C. -L., Lee, C. -C.
core   +1 more source

Regular order reductions of ordinary and delay-differential equations

open access: yes, 1998
We present a C program to compute by successive approximations the regular order reduction of a large class of ordinary differential equations, which includes evolution equations in electrodynamics and gravitation.
A. Hernández   +19 more
core   +1 more source

Time averaging for ordinary differential equations and retarded functional differential equations

open access: yesElectronic Journal of Differential Equations, 2010
We prove averaging theorems for non-autonomous ordinary differential equations and retarded functional differential equations in the case where the vector fields are continuous in the spatial variable uniformly with respect to the time and the ...
Mustapha Lakrib, Tewfik Sari
doaj  

From MIN model to ordinary differential equations

open access: yesJournal of Integrative Bioinformatics, 2007
Biological interaction networks can be modeled using the Modular Interaction Network (MIN) formalism, which provides an intermediary modeling level between the biological and mathematical ones.
Yartseva A.   +3 more
doaj   +1 more source

Oscillatory bifurcation for semilinear ordinary differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We consider the nonlinear eigenvalue problem \[u''(t) + \lambda f(u(t)) = 0, \quad u(t) > 0, \quad t \in I := (-1,1), \quad u(1) = u(-1) = 0, \] where $f(u) = u + (1/2)\sin^k u$ ($k \ge 2$) and $\lambda > 0$ is a bifurcation parameter.
Tetsutaro Shibata
doaj   +1 more source

Computability of Ordinary Differential Equations [PDF]

open access: yes, 2018
In this paper we provide a brief review of several results about the computability of initial-value problems (IVPs) defined with ordinary differential equations (ODEs). We will consider a variety of settings and analyze how the computability of the IVP will be affected.
Graça, Daniel, Zhong, Ning
openaire   +3 more sources

Green's Function Method for Ordinary Differential Equations

open access: yesمجلة المختار للعلوم, 2013
The analytical solution of non homogeneous boundary value problem in the form: Lyx=fx          axb                              B1ya=0                               B2yb=0 are obtained by using Green's function method.
Fouad A Zein Elarab   +1 more
doaj   +1 more source

Use of Complex Lie Symmetries for Linearization of Systems of Differential Equations - II: Partial Differential Equations

open access: yes, 2011
The linearization of complex ordinary differential equations is studied by extending Lie's criteria for linearizability to complex functions of complex variables.
A. Qadir   +37 more
core   +3 more sources

Doubly Periodic Meromorphic Solutions of Autonomous Nonlinear Differential Equations

open access: yesМоделирование и анализ информационных систем, 2014
The problem of constructing and classifying elliptic solutions of nonlinear differential equations is studied. An effective method enabling one to find an elliptic solution of an autonomous nonlinear ordinary differential equation is described.
M. V. Demina, N. A. Kudryashov
doaj   +1 more source

Averaging methods for piecewise-smooth ordinary differential equations

open access: yesAIMS Mathematics, 2019
The averaging method is developed for periodic piecewise-smooth systems. We discuss the behavior of solutions intersecting the discontinuity boundary and the problems it introduces. We illustrate these difficulties on specific examples.
Michal Fečkan   +3 more
doaj   +1 more source

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