ZHANG Xiaocai, ZHANG Yi. Lie symmetry and conserved quantity of fractional Lagrange system based on El-Nabulsi models[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2016,55(3):97-101.
ZHANG Xiaocai, ZHANG Yi. Lie symmetry and conserved quantity of fractional Lagrange system based on El-Nabulsi models[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2016,55(3):97-101.DOI:
The Lie symmetry and the conserved quantity of fractional Lagrange system based on El-Nabulsi models are studied. Firstly
the D-Alembert-Lagrange principle of the El-Nabulsi models is deduced based on the fractional action-like variational problem which is expanded by the Riemann-Liouville integral
and the differential equations of motion of the system are obtained. Secondly
the definition and the criterion of the Lie symmetry are given
the determination equations of the Lie symmetry of the system are established
and the generalized Hojman theorem is put forward. At the same time
the existence condition and the form of the generalized Hojman conserved quantity are obtained. Then
the generalized Noether theorem is established
the existence condition and the form of the Noether conserved quantity led by the Lie symmetry are given. Finally
two examples are given to illustrate the application of the results.