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5906 (superpermutation by Greg Egan)

by Stand-up Maths: Matt Parker

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Acoustic Ecologist
Acoustic Ecologist thumbnail
Acoustic Ecologist We do, in fact, hear the same sequence of seven notes twice. There are 7! = 5040 permutations and 5900 substrings in the composition. So by the PHP, at least one permutation must be repeated.
QED
UPDATE: Turns out: I'm wrong. My mistake is that not all substrings are permutations. Some are nonsense like 1634521.
FINAL UPDATE: After checking all 7^7 combinations, you were right. We do not hear the same sequence of 7 notes twice, but sometimes we hear the same note twice in a run of 7.
David Morrison
David Morrison thumbnail
David Morrison Does this mean we never hear the same exact sequence of seven notes twice?
elizabeth veldon
elizabeth veldon thumbnail
elizabeth veldon i know this was intended as a joke but it's a soothing piece of minimalism by mistake and that's just wonderful.
/
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released March 11, 2019

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Stand-up Maths: Matt Parker London, UK

Matt Parker is any given subset of stand-up comedian, mathematician and youtuber.

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