The angular momentum is the generator of spatial rotations.(adsbygoogle = window.adsbygoogle || []).push({});

Are the commutation relations for angular momentum the result of the fact that rotations (all rotations, also classical) do not commute or are they the result of the quantization rules for quantum mechanical angular momentum?

Are the generators for rotations and their commutation relations originally classical concepts, and when we go over to quantum mechanics then we simply use these generators as operators?

thanks

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# Generators, operators

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