Commutation relations are mathematical expressions that describe how two operators act on quantum states, revealing fundamental properties about the observables they represent. They play a crucial role in quantum mechanics, especially in understanding the nature of measurements and the underlying structure of quantum states. When two operators commute, it implies that they can be measured simultaneously with definite outcomes, while non-commuting operators indicate an intrinsic uncertainty in their measurements, directly tied to the Heisenberg uncertainty principle.
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