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Talk:Commutator

How does this correspond to the functional analysis commutator, such as that in the Uncertainty Principle defined by [A,B] = AB-BA

They are certainly connected: the common spirit is to give a "measure" of how much A and B (or whatever) do not commute. The final remark about commutators being defined also in structures different from groups should definitely be expanded. --Goochelaar

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