i.e
Can $\min{f(t)}$ be expressed by $F(\omega)$?
I have a series of data in frequency space. I can do discrete Fourier transform to time space to find its minimum. But I am wondering if there is a way that I don't need to do the transform.
2026-04-08 02:08:02.1775614082
How to find the global minimum of a function from its Fourier transformed function.
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