https://doi.org/10.1140/epjp/s13360-024-05310-z
Regular Article
A study of self-adjointness, Lie analysis, wave structures, and conservation laws of the completely generalized shallow water equation
1
Center for Applied Mathematics and Bioinformatics (CAMB), Gulf University for Science and Technology, Mubarak Al-Abdullah, Kuwait
2
IT4Innovations, VSB – Technical University of Ostrava, Ostrava-Poruba, Czech Republic
3
Department of Mathematics, Namal University, 30 KM Talagang Road, 42250, Mianwali, Pakistan
4
College of Humanities and Sciences, Ajman University, Ajman, UAE
5
Department of Mathematics, Quaid-I-Azam University, 45320, Islamabad, Pakistan
6
Department of Mathematics, Firat University, 23119, Elazig, Türkiye
Received:
14
October
2023
Accepted:
24
May
2024
Published online:
5
June
2024
This article explores the analysis of the completely generalized Hirota–Satsuma–Ito equation through Lie symmetry analysis. The equation under consideration represents a more comprehensive form of the (2+1)-dimensional HSI equation, encompassing four additional second-order derivative terms: 
, 
, , , and 
, emerging from the inclusion of second-order dissipative-type elements. We calculate the infinitesimal generators and determine the symmetry group for each generator using the Lie group invariance condition. Employing the conjugacy classes of the Abelian algebra, we transform the considered equation into an ordinary differential equation through similarity reduction. Subsequently, we solve these ordinary differential equations to derive closed-form solutions for the completely generalized Hirota–Satsuma–Ito equation under certain conditions. For other scenarios, we utilize the extended direct algebraic method to obtain soliton solutions. Furthermore, we rigorously calculated the conserved quantities corresponding to each symmetry generator, the conservation laws of the model are established using the multiplier approach. Additionally, we present the graphical representation of selected solutions for specific values of the physical parameters of the equation under scrutiny.
© The Author(s) 2024
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