35/Historical Note
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Historical Note on 35
The Pythagoreans expressed the ratios defining the intervals of the octave, the fifth and the fourth, and combined them into one sequence of ratios:
- $12 : 9 : 8 : 6$
whose sum is $35$, which they called harmony.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $10$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $10$