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We present a short review of the evolution of the methodology of the Method of simplest equation for obtaining exact particular solutions of nonlinear partial differential equations (NPDEs) and the recent extension of a version of this…

Exactly Solvable and Integrable Systems · Physics 2019-06-20 Nikolay K. Vitanov

We consider an extension of the methodology of the modified method of simplest equation to the case of use of two simplest equations. The extended methodology is applied for obtaining exact solutions of model nonlinear partial differential…

Exactly Solvable and Integrable Systems · Physics 2018-01-23 Nikolay K. Vitanov , Zlatinka I. Dimitrova

An application of the Exp-function method to search for exact solutions of nonlinear differential equations is analyzed. Typical mistakes of application of the Exp-function method are demonstrated. We show it is often required to simplify…

Exactly Solvable and Integrable Systems · Physics 2010-11-19 Nikolay A. Kudryashov , Nadejda B. Loguinova

We discuss an extension of the modified method of simplest equation for obtaining exact analytical solutions of nonlinear partial differential equations. The extension includes the possibility for use of: (i) more than one simplest…

Exactly Solvable and Integrable Systems · Physics 2019-04-09 Nikolay K. Vitanov

A new method named rational expansion method of exponent function is presented to find exact traveling wave solutions of differential-difference equations. This method generalizes the so-called tanh-method and other similar methods. Some…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 Chengshi Liu

In this paper, the exp-function method with the aid of symbolic computational system is used to obtain generalized travelling wave solutions of a Burgers-Fisher equation with variable coefficients. It is shown that the exp-function method,…

Exactly Solvable and Integrable Systems · Physics 2010-04-13 Bo-Kui Chen , Yang Li , Han-Lin Chen , Bing-Hong Wang

The modified method of simplest equation is applied to the extended Korteweg - de Vries equation and to generalized Camassa - Holm equation. Exact traveling wave solutions of these two nonlinear partial differential equations are obtained.…

Exactly Solvable and Integrable Systems · Physics 2012-07-31 Nikolay K. Vitanov , Zlatinka I. Dimitrova , Holger Kantz

The mild-slope equation and its various modifications aim to model, with varying degrees of success, linear water wave propagation over sloping or undulating seabed topography. However, despite multiple modifications and attempted…

Atmospheric and Oceanic Physics · Physics 2025-06-26 Chengnian Xiao

We introduce an alternative to the method of matched asymptotic expansions. In the "traditional" implementation, approximate solutions, valid in different (but overlapping) regions are matched by using "intermediate" variables. Here we…

Fluid Dynamics · Physics 2017-01-23 Luiz M. Faria , Rodolfo R. Rosales

We apply the Simple Equations Method (SEsM) for obtaining exact solutions of nonlinear differential equations. We discuss several examples with goal to illustrate the results from the use of derivatives of composite functions in the…

Exactly Solvable and Integrable Systems · Physics 2024-11-13 Zlatinka I. Dimitrova

We discuss the last version as well as applications of a method for obtaining exact solutions of nonlinear partial differential equations. As this version is based on more than one simple equation we call it Simple Equations Method (SEsM).…

Exactly Solvable and Integrable Systems · Physics 2019-09-04 Nikolay K. Vitanov

We discuss the application of a variant of the method of simplest equation for obtaining exact traveling wave solutions of a class of nonlinear partial differential equations containing polynomial nonlinearities. As simplest equation we use…

Exactly Solvable and Integrable Systems · Physics 2015-07-17 Nikolay K. Vitanov , Zlatinka I. Dimitrova , Kaloyan N. Vitanov

wave solutions to nonlinear partial differential equations. We simplify the so called (G'/G)-expansion method and apply two of those methods to simple physical problems.

Mathematical Physics · Physics 2009-02-24 Francisco M. Fernandez

The method of exhaustion is generalized to a simple formula that can be used to integrate functions under very general conditions, provided that the integral exists. Both a geometric proof (following the usual procedure for the method of…

Classical Analysis and ODEs · Mathematics 2007-05-23 Anthony A. Ruffa

We apply the version of the method of simplest equation called modified method of simplest equation for obtaining exact traveling wave solutions of a class of equations that contain as particular case a nonlinear PDE that models shallow…

Exactly Solvable and Integrable Systems · Physics 2017-09-18 Nikolay K. Vitanov , Tsvetelina I. Ivanova

The study gives a brief overview of existing modifications of the method of functional separation of variables for nonlinear PDEs. It proposes a more general approach to the construction of exact solutions to nonlinear equations of applied…

Mathematical Physics · Physics 2020-01-07 Andrei D. Polyanin

A multiple exp-function method to exact multiple wave solutions of nonlinear partial differential equations is proposed. The method is oriented towards ease of use and capability of computer algebra systems, and provides a direct and…

Exactly Solvable and Integrable Systems · Physics 2015-05-20 Wen-Xiu Ma , Tingwen Huang , Yi Zhang

The modification of simplest equation method to look for exact solutions of nonlinear partial differential equations is presented. Using this method we obtain exact solutions of generalized Korteweg-de Vries equation with cubic source and…

Exactly Solvable and Integrable Systems · Physics 2010-11-23 Olga Yu. Efimova

We discuss a new version of a method for obtaining exact solutions of nonlinear partial differential equations. We call this method the Simple Equations Method (SEsM). The method is based on representation of the searched solution as…

Exactly Solvable and Integrable Systems · Physics 2019-08-21 Nikolay K. Vitanov , Zlatinka I. Dimitrova

I investigate the possibility that explicit solutions of stochastic reaction-diffusion equations can be found by multiplying the deterministic travelling waves with a stochastic exponent. This approach has become widespread in the…

Analysis of PDEs · Mathematics 2026-03-27 C. H. S. Hamster
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