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A comment on What Is an Eigenvalue?. Parent comment

Re:What Is an Eigenvalue? by alanbernstein on Tuesday November 08, 2022 @11:20AM (#33520690)
Complex exponentials are the eigenfunctions of the Fourier transform. In other words, frequency component values are the eigenvalues.

https://en.m.wikipedia.org/wiki/Eigenfunction#Vibrating_stri...

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Re:What Is an Eigenvalue? by contravariant on Tuesday November 08, 2022 @12:11PM (#33521397)
That makes no sense, the Fourier transform of a complex exponential is a delta function.
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Re:What Is an Eigenvalue? by alanbernstein on Tuesday November 08, 2022 @05:04PM (#33524950)
Hmm, you're right, that should have been obvious. Thanks for the correction.
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