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AMA | August 2023
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
The Importance of Morality
A Lagrangian is an expression from which you can derive many different equations of motion at once. In good old-fashioned Newtonian mechanics, classically, you would have to separately have equations of motion. "I don't think it's true that we require invariance of the Lagrangian rather than the equations of motion," he says.
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