scholarly journals Conservation laws and line soliton solutions of a family of modified KP equations

2020 ◽  
Vol 13 (10) ◽  
pp. 2655-2665 ◽  
Author(s):  
Stephen C. Anco ◽  
◽  
Maria Luz Gandarias ◽  
Elena Recio ◽  
Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1277
Author(s):  
María S. Bruzón ◽  
Tamara M. Garrido ◽  
Elena Recio ◽  
Rafael de la Rosa

In this work, we study a generalised (2+1) equation of the Zakharov–Kuznetsov (ZK)(m,n,k) equation involving three arbitrary functions. From the point of view of the Lie symmetry theory, we have derived all Lie symmetries of this equation depending on the arbitrary functions. Line soliton solutions have also been obtained. Moreover, we study the low-order conservation laws by applying the multiplier method. This family of equations is rich in Lie symmetries and conservation laws. Finally, when the equation is expressed in potential form, it admits a variational structure in the case when two of the arbitrary functions are linear. In addition, the corresponding Hamiltonian formulation is presented.


2021 ◽  
pp. 2150277
Author(s):  
Hongcai Ma ◽  
Qiaoxin Cheng ◽  
Aiping Deng

[Formula: see text]-soliton solutions are derived for a (3 + 1)-dimensional potential-Yu–Toda–Sasa–Fukuyama (YTSF) equation by using bilinear transformation. Some local waves such as period soliton, line soliton, lump soliton and their interaction are constructed by selecting specific parameters on the multi-soliton solutions. By selecting special constraints on the two soliton solutions, period and lump soliton solution can be obtained; three solitons can reduce to the interaction solution between period soliton and line soliton or lump soliton and line soliton under special parameters; the interaction solution among period soliton and two line solitons, or the interaction solution for two period solitons or two lump solitons via taking specific constraints from four soliton solutions. Finally, some images of the results are drawn, and their dynamic behavior is analyzed.


2011 ◽  
Vol 89 (7) ◽  
pp. 739-743 ◽  
Author(s):  
Abdul-Majid Wazwaz

In this work we study an extended Kadomtsev–Petviashvili (KP) equation and a system of KP equations. We show that the extension terms do not kill the integrability of typical models. Hereman’s simplified method is used to justify this goal. Multiple soliton solutions will be derived for each model. The analysis highlights the effects of the extension terms on the dispersion relations, and hence on the structures of the solutions.


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