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Coupled second order nonlinear differential equations are of fundamental importance in dynamics. In this part of our study on the integrability and linearization of nonlinear ordinary differential equations we focus our attention on the…

Exactly Solvable and Integrable Systems · Physics 2009-11-13 V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

We discuss a method of solving $n^{th}$ order scalar ordinary differential equations by extending the ideas based on the Prelle-Singer (PS) procedure for second order ordinary differential equations. We also introduce a novel way of…

Exactly Solvable and Integrable Systems · Physics 2015-06-26 V K Chandrasekar , M Senthilvelan , M Lakshmanan

We introduce a method for finding general solutions of third-order nonlinear differential equations by extending the modified Prelle-Singer method. We describe a procedure to deduce all the integrals of motion associated with the given…

Exactly Solvable and Integrable Systems · Physics 2009-11-11 V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

Continuing our study on the complete integrability of nonlinear ordinary differential equations, in this paper we consider the integrability of a system of coupled first order nonlinear ordinary differential equations (ODEs) of both…

Exactly Solvable and Integrable Systems · Physics 2009-11-13 V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

An extension of the ideas of the Prelle-Singer procedure to second order differential equations is proposed. As in the original PS procedure, this version of our method deals with differential equations of the form…

Mathematical Physics · Physics 2008-10-02 L. G. S. Duarte , L. A. da Mota , J. E. F. Skea

A new method of solving third-order ordinary complex differential equations (OCDEs) by generalizing Prelle-Singer. The idea which is a procedure for finding the solution for second-order differential equations in the real domain. We have…

Mathematical Physics · Physics 2018-10-15 Ali Joohy , Mohammed S. Mechee , Ghassan A. Al-Juaifri

We consider systems of ordinary differential equations (ODEs) of the form ${\cal B}{\mathbf K}=0$, where $\cal B$ is a Hamiltonian operator of a completely integrable partial differential equation (PDE) hierarchy, and ${\mathbf K}=(K,L)^T$.…

Exactly Solvable and Integrable Systems · Physics 2014-05-13 P R Gordoa , A Pickering , M Senthilvelan

In this paper, to begin with, we review six different analytical methods which are widely used to derive symmetries, integrating factors, multipliers, Darboux polynomials and integrals of second order nonlinear ordinary differential…

Exactly Solvable and Integrable Systems · Physics 2015-02-16 R. Mohanasubha , V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

In this work, we establish a connection between the extended Prelle-Singer procedure with other widely used analytical methods to identify integrable systems in the case of $n^{th}$-order nonlinear ordinary differential equations (ODEs). By…

Exactly Solvable and Integrable Systems · Physics 2016-09-28 R. Mohanasubha , V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

In this paper, we consider a generalized second order nonlinear ordinary differential equation of the form $\ddot{x}+(k_1x^q+k_2)\dot{x}+k_3x^{2q+1}+k_4x^{q+1}+\lambda_1x=0$, where $k_i$'s, $i=1,2,3,4$, $\lambda_1$ and $q$ are arbitrary…

Exactly Solvable and Integrable Systems · Physics 2012-01-19 V. K. Chandrasekar , S. N. Pandey , M. Senthilvelan , M. Lakshmanan

In this paper, we present a method of deriving extended Prelle-Singer method's quantifiers from Darboux Polynomials for third-order nonlinear ordinary differential equations. By knowing the Darboux polynomials and its cofactors, we extract…

Exactly Solvable and Integrable Systems · Physics 2023-02-08 R. Mohanasubha , M. Senthilvelan

In this work, we establish a connection between the extended Prelle-Singer procedure (Chandrasekar \textit{et al.} Proc. R. Soc. A 2005) with five other analytical methods which are widely used to identify integrable systems in the…

Exactly Solvable and Integrable Systems · Physics 2017-02-08 R. Mohanasubha , V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

Linearization of coupled second order nonlinear ordinary differential equations (SNODEs) is one of the open and challenging problems in the theory of differential equations. In this paper we describe a simple and straightforward method to…

Exactly Solvable and Integrable Systems · Physics 2015-05-13 V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

We unearth the interconnection between various analytical methods which are widely used in the current literature to identify integrable nonlinear dynamical systems described by third-order nonlinear ordinary differentiable equations…

Exactly Solvable and Integrable Systems · Physics 2015-08-19 R. Mohanasubha , V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

In this second paper on the method of deriving linearizing transformations for nonlinear ODEs, we extend the method to a set of two coupled second order nonlinear ODEs. We show that besides the conventional point, Sundman and generalized…

Exactly Solvable and Integrable Systems · Physics 2012-01-27 V. K. Chandrasekar , M. Senthilvelan , M. Lakshmanan

In the first part of planned series of papers the formal general solutions to selection of 80 examples of different types of second order nonlinear PDEs in two independent variables with constant parameters are given. The main goal here is…

Mathematical Physics · Physics 2008-01-29 Yu. N. Kosovtsov

Here we present a new approach to deal with first order ordinary differential equations (1ODEs), presenting functions. This method is an alternative to the one we have presented in [1]. In [2], we have establish the theoretical background…

Classical Analysis and ODEs · Mathematics 2023-01-06 L. G. S. Duarte , L. A. C. P. da Mota , A. B. M. M. Queiroz

We present an algorithm to solve First Order Ordinary Differential Equations (FOODEs) extending the Prelle-Singer (PS) Method. The usual PS-approach miss many FOODEs presenting Liouvillian functions in the solution (LFOODEs). We point out…

Mathematical Physics · Physics 2009-11-07 L. G. S. Duarte , S. E. S. Duarte , L. A. C. P. da Mota

In [Solving second order ordinary differential equations by extending the Prelle-Singer method, J. Phys. A: Math.Gen., 34, 3015-3024 (2001)] we defined a function (we called S) associated to a rational second order ordinary differential…

Mathematical Physics · Physics 2010-07-29 L. G. S. Duarte , L. A. C. P. da Mota

The Prelle-Singer method allows determining an elementary first integral admitted by a polynomial vector field in the plane. It is a semi-algorithm whose nonlinear step consists of determining the Darboux polynomials of the vector field. In…

Mathematical Physics · Physics 2024-05-14 L. G. S. Duarte , H. S. Ferreira , L. A. C. P. da Mota
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