Lie symmetry and non-Noether conserved quantities of variable mass Birkhoffian system
变质量Birkhoff系统的Lie对称性和非Noether守恒量

In this paper, the Lie symmetrical non-Noether conserved quantity of variable mass Birkhoffian system under the infinitesimal transformations is studied. First, variable mass Birkhoffian equations are established; second, Lie symmetry determining equations are given. Then the non-Noether conserved quantity is obtained. An example is given to illustrate the application of the result.