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    Article

    The complementary property of Lindelöf's work and Chaplygin's work

    Lindelöf' s equation is derived by using the Vakonomic model, which shows that Lindelöf' s work coincides with Vakonomic model. Chaplygin' s equation is derived by using Chetaev' s model, which shows that Chap...

    Liang Li-fu, Chen Wei-dong in Applied Mathematics and Mechanics (2000)

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    Article

    On the inverse problem in calculus of variations

    The inverse problem in calculus of variations is studied. By introducing a new concept called Variational Integral, a new method to systematically study the inverse problem in calculus of variations is given. ...

    Liang Li-fu, Shi Zhi-fei in Applied Mathematics and Mechanics (1994)

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    Article

    On some important problems in analytical dynamics of non-holonomic systems

    By using deductive method, Chetaev condition is derived in this paper. We point out that the processes of variation and differentiation are not permutable in non-holonomic dynamics is a misunderstanding. The p...

    Liang Li-fu, Shi Zhi-fei in Applied Mathematics and Mechanics (1993)