Shchedrinisma

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Interval information
Ratio 4625/4624
Subgroup monzo 2.5.17.37 [-4 3 -2 1
Size in cents 0.37436135¢
Name shchedrinisma
Color name 37o17uuy3-2
thisosusutriyo negative 2nd
FJS name [math]\text{ddd}{-3}^{5,5,5,37}_{17,17}[/math]
Special properties superparticular,
reduced
Tenney height (log2 nd) 24.3502
Weil height (log2 max(n, d)) 24.3505
Wilson height (sopfr(nd)) 94
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~1.20041 bits
Comma size unnoticeable
open this interval in xen-calc

4625/4624, the shchedrinisma, is a 37-limit superparticular comma of about 0.37 cents.

Commatic relationships

This comma is the difference between the following superparticular pairs:

It can be factored into following superparticular commas:

Temperaments

Tempering out this comma in the full 37-limit leads to the rank-11 temperament shchedrinismic. Using the 2.5.17.37 subgroup leads to the rank-3 temperament shchedrinic.

Shchedrinismic

Subgroup: 2.3.5.7.11.13.17.19.23.29.31.37

Comma list: 4625/4624

Mapping:

[⟨ 1 1 2 2 3 3 4 4 4 4 4 6 ],
0 1 0 0 0 0 0 0 0 0 0 0 ],
0 0 1 0 0 0 0 0 0 0 0 -3 ],
0 0 0 1 0 0 0 0 0 0 0 0 ],
0 0 0 0 1 0 0 0 0 0 0 0 ],
0 0 0 0 0 1 0 0 0 0 0 0 ],
0 0 0 0 0 0 1 0 0 0 0 2 ],
0 0 0 0 0 0 0 1 0 0 0 0 ],
0 0 0 0 0 0 0 0 1 0 0 0 ],
0 0 0 0 0 0 0 0 0 1 0 0 ],
0 0 0 0 0 0 0 0 0 0 1 0 ]]

Optimal tuning (CTE): ~2 = 1\1, ~3/2 = 701.955, ~5/4 = 386.271, ~7/4 = 968.826, ~11/8 = 551.318, ~13/8 = 840.528, ~17/16 = 105.043, ~19/16 = 297.513, ~23/16 = 628.274, ~29/16 = 1029.577, ~31/16 = 1145.036

Shchedrinic

Subgroup: 2.5.17.37

Comma list: 4625/4624

Mapping:

[⟨ 1 2 4 6 ],
0 1 0 3 ],
0 0 1 2 ]]

Optimal tuning (CTE): ~2 = 1\1, ~5/4 = 386.271, ~17/16 = 105.043

Optimal ET sequence4, 5g, 6l, 7g, 9, 16, 22, 25, 34, 56, 81, 90, 115, 205, 320, 3315, 3635, 3955, 4275, 4595, 4915, 5235, 5555l, 5875l, 6195l, 6754l, 7074l, 7394l, 7714l

Etymology

The shchedrinisma was named by Francium in 2024. It refers to 4625 Shchedrin, the asteroid. Which was in turn named after a Russian composer.

See also