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Results tagged with fourier-transform
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user 49208
1
vote
Error of Discrete Fourier Transform on Finite Domain (vs. Continuous FT) in terms of Sobolev...
Also note a paper, but it is in Russian:
Kurbatov A.V., Kurbatov V.G. Approximation of (integral) FT via DFT.
http://www.vestnik.vsu.ru/program/view/view.asp?sec=physmath&year=2012&num=02&f_name=2012 …
- 1,560
8
votes
Positivity of certain Fourier transform
This is a well-known problem, solved recently in dissertation of Zastavny based on some inequalities for p.d.f.
More: it is a Schonberg problem, positive for $0<m\leq1$, not positive otherwise.
- 1,560