海量图书期刊资源,随时随地畅享阅读乐趣
On the classic nonholonomic dynamicsGuo Zhongheng; Gao Puyun · 1989
A new method for the construction of a LagrangianGao Puyun; Guo Zhongheng · 1993
Hamiltonian structure and first integrals for the Lotka–Volterra systemsPuyun Gao · 2000
A new method for the construction of integrable hamiltonian systemsGao Puyun · Applied Mathematics and Mechanics · 1996
To derive Lagrange equations of nonholonomic systems without using the Chetaev conditionsPuyun Gao · 2005
Direct integration method and first integrals for three-dimensional Lotka–Volterra systemsPuyun Gao · 1999
An indirect method of finding integrals for three-dimensional quadratic homogeneous systemsPuyun Gao; Zhaonan Liu · 1998