如何构造Lagrangian？
How to compose Lagrangian?
摘要：
说明了构造李变换群的拉格朗日量的方法。作为例子，构造了实平面旋转和实直线仿射变换的拉格朗日量。
英文摘要：
A method for constructing Lagrangians for the Lie transformation groups is explained. As examples, the Lagrangians for real plane rotations and affine transformations of the real line are constructed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
