Definition of "eigenfunction" []

• A function such that, for a given linear operator , for some scalar (called an eigenvalue). (noun)

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• "The Copenhagen interpretation of QM says that the wavefunction should "collapse" (revert to a single eigenfunction) everywhere simultaneously when an observation is made."
• "\Phi+\bar {\Phi} is an eigenfunction belonging to '' E '', which means that the wave function may be chosen real."
• "The exception being the case that is an eigenfunction belonging to E, which means that the wave function may be chosen real."