کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4609619 1338521 2016 29 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Algorithmic framework for group analysis of differential equations and its application to generalized Zakharov–Kuznetsov equations
ترجمه فارسی عنوان
چارچوب الگوریتمی برای تحلیل گروهی معادلات دیفرانسیل و کاربرد آن در تعمیم معادلات زاخاروف کوزنسف
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات آنالیز ریاضی
چکیده انگلیسی

In this paper, we explain in more details the modern treatment of the problem of group classification of (systems of) partial differential equations (PDEs) from the algorithmic point of view. More precisely, we revise the classical Lie algorithm of construction of symmetries of differential equations, describe the group classification algorithm and discuss the process of reduction of (systems of) PDEs to (systems of) equations with smaller number of independent variables in order to construct invariant solutions. The group classification algorithm and reduction process are illustrated by the example of the generalized Zakharov–Kuznetsov (GZK) equations of form ut+(F(u))xxx+(G(u))xyy+(H(u))x=0ut+(F(u))xxx+(G(u))xyy+(H(u))x=0. As a result, a complete group classification of the GZK equations is performed and a number of new interesting nonlinear invariant models which have non-trivial invariance algebras are obtained. Lie symmetry reductions and exact solutions for two important invariant models, i.e., the classical and modified Zakharov–Kuznetsov equations, are constructed. The algorithmic framework for group analysis of differential equations presented in this paper can also be applied to other nonlinear PDEs.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Differential Equations - Volume 260, Issue 3, 5 February 2016, Pages 2354–2382
نویسندگان
, ,