نتایج جستجو برای: emden equations

تعداد نتایج: 239041  

2016
Rui Wang Qiqiang Li

We consider a class of second-order Emden-Fowler equations with positive and nonpositve neutral coefficients. By using the Riccati transformation and inequalities, several oscillation and asymptotic results are established. Some examples are given to illustrate the main results.

Journal: :J. Applied Mathematics 2012
Changqing Yang Jianhua Hou

A numerical method to solve Lane-Emden equations as singular initial value problems is presented in this work. This method is based on the replacement of unknown functions through a truncated series of hybrid of block-pulse functions and Chebyshev polynomials. The collocation method transforms the differential equation into a system of algebraic equations. It also has application in a wide area...

Journal: :computational methods for differential equations 0
waleed m. abd- elhameed department of mathematics, faculty of science, king abdulaziz university, jeddah, saudi arabia youssri youssri department of mathematics, faculty of science, cairo university, giza-egypt eid h. doha department of mathematics, faculty of science, cairo university, giza-egypt

in this paper, the ultraspherical operational matrices of derivatives are constructed. based on these operational matrices, two numerical algorithms are presented and analyzed for obtaining new approximate spectral solutions of a class of linear and nonlinear lane-emden type singular initial value problems. the basic idea behind the suggested algorithms is basically built on transforming the eq...

J. A. Rad K. Parand, S. A. Hossayni‎ S. Abbasbandy,

The objective of this paper is applying the well-known exact operational matrices (EOMs) idea for solving the Emden-Fowler equations, illustrating the superiority of EOMs over ordinary operational matrices (OOMs). Up to now, a few studies have been conducted on EOMs ; but the solved differential equations did not have high-degree nonlinearity and the reported results could not strongly show the...

2005
L. ERBE C. C. TISDELL Lynn Erbe Allan Peterson Christopher C. Tisdell

We are concerned with proving that solutions of certain dynamical systems on time scales satisfy some monotoneity conditions. These results then give important results for nth order linear scalar equations. We then give a related result for a third order nonlinear (Emden–Fowler type) dynamic equation.

2014
Ravi P. Agarwal Martin Bohner Tongxing Li Chenghui Zhang

We establish some new criteria for the oscillation of second-order Emden–Fowler neutral delay differential equations.We study the case of superlinear and the case of sublinear equations subject to various conditions. The results obtained show that the presence of a neutral term in a differential equation can cause or destroy oscillatory properties. Several examples are provided to illustrate th...

Journal: :Journal of the European Mathematical Society 2013

Journal: :Journal of Mathematical Analysis and Applications 2002

Journal: :Journal of Taibah University for Science 2018

Journal: :Süleyman demirel üniversitesi fen-edebiyat fakültesi fen dergisi 2022

In this article, we tried to get the solution of a class Lane Emden type equations by using Fourier Decomposition Method. This method is obtained transform and Adomian (FADM) together.

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