Abstract:We present a brief report on the different methods for finding exact solutions of nonlinear evolution equations. Explicit exact traveling wave solutions are the most amenable besides implicit and parametric ones. It is shown that most of methods that exist in the literature are equivalent to the "generalized mapping method" that unifies them. By using this method a class of formal exact solutions for reaction diffusion equations with finite memory transport is obtained. Attention is focused to the finite-memor… Show more
“…The fundamental rules and objectives of the uni ed method are used here (for details see [19]). The only distinction is that the main aim in [19] is to search for a single traveling wave solution, namely…”
Section: A Methodology To the Generalized Uni Ed Methodsmentioning
confidence: 99%
“…The only distinction is that the main aim in [19] is to search for a single traveling wave solution, namely…”
Section: A Methodology To the Generalized Uni Ed Methodsmentioning
confidence: 99%
“…By using the uni ed method [19], we obtain solutions in the form; (i) Polynomial function solutions (ii) Rational function solutions In this paper, we con ne ourselves to nd rational function solutions.…”
Section: A Methodology To the Generalized Uni Ed Methodsmentioning
confidence: 99%
“…It is worth to be noticing that, n and k are determined from the balance equation by the criteria given in [19][20][21]. Also, a second condition (the consistency condition), which asserts that the constants in Equations (4) and (5) could be consistently determined, is used.…”
Section: The Rational Function Solutionsmentioning
The Korteweg-de Vries equation (KdV) and the (2+ 1)-dimensional Nizhnik-Novikov-Veselov system (NNV) are presented. Multi-soliton rational solutions of these equations are obtained via the generalized unied method. The analysis emphasizes the power of this method and its capability of handling completely (or partially) integrable equations. Compared with Hirota's method and the inverse scattering method, the proposed method gives more general exact multi-wave solutions without much additional e ort. The results show that, by virtue of symbolic computation, the generalized uni ed method may provide us with a straightforward and e ective mathematical tool for seeking multi-soliton rational solutions for solving many nonlinear evolution equations arising in di erent branches of sciences.
“…The fundamental rules and objectives of the uni ed method are used here (for details see [19]). The only distinction is that the main aim in [19] is to search for a single traveling wave solution, namely…”
Section: A Methodology To the Generalized Uni Ed Methodsmentioning
confidence: 99%
“…The only distinction is that the main aim in [19] is to search for a single traveling wave solution, namely…”
Section: A Methodology To the Generalized Uni Ed Methodsmentioning
confidence: 99%
“…By using the uni ed method [19], we obtain solutions in the form; (i) Polynomial function solutions (ii) Rational function solutions In this paper, we con ne ourselves to nd rational function solutions.…”
Section: A Methodology To the Generalized Uni Ed Methodsmentioning
confidence: 99%
“…It is worth to be noticing that, n and k are determined from the balance equation by the criteria given in [19][20][21]. Also, a second condition (the consistency condition), which asserts that the constants in Equations (4) and (5) could be consistently determined, is used.…”
Section: The Rational Function Solutionsmentioning
The Korteweg-de Vries equation (KdV) and the (2+ 1)-dimensional Nizhnik-Novikov-Veselov system (NNV) are presented. Multi-soliton rational solutions of these equations are obtained via the generalized unied method. The analysis emphasizes the power of this method and its capability of handling completely (or partially) integrable equations. Compared with Hirota's method and the inverse scattering method, the proposed method gives more general exact multi-wave solutions without much additional e ort. The results show that, by virtue of symbolic computation, the generalized uni ed method may provide us with a straightforward and e ective mathematical tool for seeking multi-soliton rational solutions for solving many nonlinear evolution equations arising in di erent branches of sciences.
“…In this work, we have to find the traveling wave solutions TWS of equation (9) by using the unified method UM [33]. The outline of this method are introduced as follows:…”
In this paper, we investigate the dynamic of DNA described via DNA double-stranded model with transverse and longitudinal motions. This model admits solitary, soliton, periodic, or chirped wave solution. It is justified that the most admissible physical solution is the soliton or chirped wave solution. The stability analysis of all these solutions is performed by using the Sturm-Liouville problem and the topological invariance. We found that soliton and chirped waves are unstable so that the unbounded amplitude may occur. In the view of these models, damage of DNA membrane or bases may occur under small disturbance. Also, the suggested models will be indispensable when inhomogeneity or medium dissipation is taken into account.
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