Invariant Variation Problems

@article{Noether1971InvariantVP,
  title={Invariant Variation Problems},
  author={Emmy Noether and Morton Tavel},
  journal={Transport Theory and Statistical Physics},
  year={1971},
  volume={1},
  pages={186-207}
}
Abstract The problems in variation here concerned are such as to admit a continuous group (in Lie's sense); the conclusions that emerge for the corresponding differential equations find their most general expression in the theorems formulated in Section I and proved in following sections. Concerning these differential equations that arise from problems of variation, far more precise statements can be made than about arbitrary differential equations admitting of a group, which are the subject of… 

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