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iaf
searching PlanetScale…
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by
iaf
12y ago
Ah, I didn't know 'characteristic' function and 'indicator' function were synonyms. Thanks!
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by
iaf
12y ago
Can someone please expand on this statement, "if one is counting solutions, inside a given set, to a linear equation, then it is enough, and usually easier, to estimate Fourier coefficients of the characteristic function of the set&quo