نتایج جستجو برای: general form partial differential equation

تعداد نتایج: 1921936  

2014
Mohamed S. Mohamed

The aim of this paper is by using the fractional complex transform and the optimal homotopy analysis by method (OHAM) to find the analytical approximate solutions for nonlinear partial fractional differential Zakharov-Kuznetsov equation. Fractional complex transformation is proposed to convert nonlinear partial fractional differential Zakharov-Kuznetsov equation to nonlinear partial differentia...

Journal: :SIAM Journal of Applied Mathematics 2016
Jianke Yang

A normal form is derived for Hamiltonian–Hopf bifurcations of solitary waves in nonlinear Schrödinger equations with general external potentials. This normal form is a simple second-order nonlinear ordinary differential equation (ODE) that is asymptotically accurate in describing solution dynamics near Hamiltonian–Hopf bifurcations. When the nonlinear coefficient in this normal form is complex,...

2008
W. N. EVERITT B. T. JOHANSSON L. L. LITTLEJOHN C. MARKETT

In this paper we consider analytical and numerical solutions to the Dirichlet boundary value problem for the biharmonic partial differential equation, on a disk of finite radius in the plane. The physical interpretation of these solutions is that of the harmonic oscillations of a thin, clamped plate. For the linear, fourth-order, biharmonic partial differential equation in the plane, it is well...

Journal: :Advances in Geometry 2022

Abstract The Malgrange–Galois groupoid of Painlevé IV equations is known to be, for very general values parameters, the pseudogroup transformations phase space preserving a volume form, time form and equation. Here we compute VI family including all parameters as new dependent variables. We conclude that it parameter values, differential independent variable, in variables This implies solution ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشکده علوم پایه 1387

چکیده ندارد.

Journal: :J. Applied Mathematics 2013
Nkululeko Mindu David P. Mason

The migration of melt through the mantle of the Earth is governed by a third-order nonlinear partial differential equation for the voidage or volume fraction of melt. The partial differential equation depends on the permeability of the medium which is assumed to be a function of the voidage. It is shown that the partial differential equation admits, as well as translations in time and space, ot...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه محقق اردبیلی - دانشکده علوم 1386

چکیده ندارد.

2016
ÀNGEL CALSINA J. Z. FARKAS

In this work first we consider a physiologically structured population model with a distributed recruitment process. That is, our model allows newly recruited individuals to enter the population at all possible individual states, in principle. The model can be naturally formulated as a first order partial integro-differential equation, and it has been studied extensively. In particular, it is w...

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