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Sparse Fourier transform

Also called sparse FFT, sFFT.

Recovers the k largest DFT coefficients of a length-n signal in time sublinear in n when the spectrum is sparse.

Recovers the k largest DFT coefficients of a length-n signal in time sublinear in n when the spectrum is sparse.

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LadderLevelWhat the next level needs
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  • add a proof in proofs/ (06.5)
LeanL0 no Lean part
  • name a Lean module in the lean field (07)
VisualV0 none
  • add viz/scene.ts or a figure (10)
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  • the section The problem
  • pseudocode in The algorithm
  • complexity claims in the front matter
  • one source with a locator

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