3627/3626

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Interval information
Ratio 3627/3626
Subgroup monzo 2.3.7.13.31.37 [-1 2 -2 1 1 -1
Size in cents 0.4773843¢
Name sayersisma
Color name 37u31o3orr-3
thisuthiwothoruru negative 3rd
FJS name [math]\displaystyle{ \text{m}{-2}^{13,31}_{7,7,37} }[/math]
Special properties superparticular,
reduced
Tenney height (log2 nd) 23.6487
Weil height (log2 max(n, d)) 23.6491
Wilson height (sopfr(nd)) 103
Harmonic entropy
(Shannon, [math]\displaystyle{ \sqrt{nd} }[/math])
~1.20121 bits
Comma size unnoticeable
Open this interval in xen-calc

3627/3626, the sayersisma, is a 37-limit superparticular comma of about 0.48 cents.

Commatic relationships

This comma is the difference between the following superparticular pairs:

It can be factored into the following superparticular ratios:

Temperaments

Tempering out this comma in the full 37-limit leads to the rank-11 temperament sayersismic. Using the 2.3.7.13.31.37 subgroup leads to the rank-5 temperament sayersic.

Sayersic

Subgroup: 2.3.7.13.31.37

Comma list: 3627/3626

Mapping:

[⟨ 1 1 2 3 4 4 ],
0 1 0 0 0 2 ],
0 0 1 0 0 -2 ],
0 0 0 1 0 1 ],
0 0 0 0 1 1 ]]

Optimal tuning (CTE): ~2 = 1\1, ~3/2 = 701.933, ~7/4 = 968.896, ~13/8 = 840.467, ~31/16 = 1144.926

Optimal ET sequence5f, 7, 8d, 9kl, 10k, 12fk, 14fl, 14, 17l, 17k, 19, 26, 27, 36l, 53, 63, 67, 75, 77, 94, 130, 224, 301, 328, 383, 458, 477, 607, 1308, 1542, 1636, 2243, 5951l

Badness (Sintel): 0.046

Etymology

This comma was named by Francium in 2025. It refers to 3627 Sayers, the asteroid, which in turn was named after Dorothy L. Sayers, a British author.

See also