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This tag is for questions on the meaning, history, and usage of various symbols and notation that are used to denote different quantities in physics. Don't forget to mention the reference, where you encountered those notations.
8
votes
Inner product linearity on Dirac notation
(Incidentally, I've been trying to get my student to stop using this questionable notation. It struck him as intuitive, but I think he's willing to give it up.) …