Nyquist-Shannon sampling theorem

Also called Shannon sampling theorem, Whittaker-Shannon theorem, Kotelnikov theorem.

A bandlimited signal is determined by samples taken at more than twice its maximum frequency.

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The build computes these levels from the evidence in the repository. Each row says what the next level needs. Read what the levels mean.

Ladder	Level	What the next level needs
Human proof	H0 no proof	add a proof in proofs/ (06.5)
Lean	L0 no Lean part	name a Lean module in the lean field (07)
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