What is Fourier inversion theorem?
In [[mathematics]], the '''Fourier inversion theorem''' says that for many types of [[Function (mathematics)|functions]] it is possible to recover a function from its [[Fourier transform]]. Intuitively it may be viewed as the statement that if we know all [[frequency]] and [[phase]] information about a [[Wave (physics)|wave]] then we may reconstruct the original wave precisely. [[Category:Mathematical theorems]] [[Category:Harmonic analysis]]