Integrability via Functional Expansion for the KMN Model

This paper considers issues such as integrability and how to get specific classes of solutions for nonlinear differential equations. The nonlinear Kundu–Mukherjee–Naskar (KMN) equation is chosen as a model, and its traveling wave solutions are investigated by using a direct solving method. It is a q...

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Main Authors: Radu Constantinescu, Aurelia Florian
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Symmetry
Subjects:
Online Access:https://www.mdpi.com/2073-8994/12/11/1819
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author Radu Constantinescu
Aurelia Florian
author_facet Radu Constantinescu
Aurelia Florian
author_sort Radu Constantinescu
collection DOAJ
description This paper considers issues such as integrability and how to get specific classes of solutions for nonlinear differential equations. The nonlinear Kundu–Mukherjee–Naskar (KMN) equation is chosen as a model, and its traveling wave solutions are investigated by using a direct solving method. It is a quite recent proposed approach called the functional expansion and it is based on the use of auxiliary equations. The main objectives are to provide arguments that the functional expansion offers more general solutions, and to point out how these solutions depend on the choice of the auxiliary equation. To see that, two different equations are considered, one first order and one second order differential equations. A large variety of KMN solutions are generated, part of them listed for the first time. Comments and remarks on the dependence of these solutions on the solving method and on form of the auxiliary equation, are included.
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spelling doaj.art-257355327ada43fea770a31f607e4d752023-11-20T19:35:34ZengMDPI AGSymmetry2073-89942020-11-011211181910.3390/sym12111819Integrability via Functional Expansion for the KMN ModelRadu Constantinescu0Aurelia Florian1Department of Physics, University of Craiova, A.I.Cuza 13, 200585 Craiova, RomaniaDepartment of Physics, University of Craiova, A.I.Cuza 13, 200585 Craiova, RomaniaThis paper considers issues such as integrability and how to get specific classes of solutions for nonlinear differential equations. The nonlinear Kundu–Mukherjee–Naskar (KMN) equation is chosen as a model, and its traveling wave solutions are investigated by using a direct solving method. It is a quite recent proposed approach called the functional expansion and it is based on the use of auxiliary equations. The main objectives are to provide arguments that the functional expansion offers more general solutions, and to point out how these solutions depend on the choice of the auxiliary equation. To see that, two different equations are considered, one first order and one second order differential equations. A large variety of KMN solutions are generated, part of them listed for the first time. Comments and remarks on the dependence of these solutions on the solving method and on form of the auxiliary equation, are included.https://www.mdpi.com/2073-8994/12/11/1819functional expansiontraveling wavesKMN equation
spellingShingle Radu Constantinescu
Aurelia Florian
Integrability via Functional Expansion for the KMN Model
Symmetry
functional expansion
traveling waves
KMN equation
title Integrability via Functional Expansion for the KMN Model
title_full Integrability via Functional Expansion for the KMN Model
title_fullStr Integrability via Functional Expansion for the KMN Model
title_full_unstemmed Integrability via Functional Expansion for the KMN Model
title_short Integrability via Functional Expansion for the KMN Model
title_sort integrability via functional expansion for the kmn model
topic functional expansion
traveling waves
KMN equation
url https://www.mdpi.com/2073-8994/12/11/1819
work_keys_str_mv AT raduconstantinescu integrabilityviafunctionalexpansionforthekmnmodel
AT aureliaflorian integrabilityviafunctionalexpansionforthekmnmodel