Kuragesma: Difference between revisions

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43940/43923, the '''Kuragesma''', is a [[No-sevens subgroup temperaments|no-sevens]], [[13-limit]] [[unnoticeable comma]] measuring about 0.66993 [[Cent|cents]]. It is the difference between [[5/3]], which is the pure major 6th, and three intervals of [[26/25|14641/8788]].
{{Infobox interval|Color name=3o<sup>3</sup>1u<sup>4</sup>y2 ,Tritho-aquadlu-ayo 2nd|Comma=yes|Name=Kuragesma|Ratio=43940/43923}}
43940/43923, the '''Kuragesma''', is a [[No-sevens subgroup temperaments|no-sevens]] [[13-limit]] [[unnoticeable comma]] measuring about 0.66993 {{Cent}}. It is the difference between [[5/3]], the classical major 6th, and 14641/8788 ({{Monzo| -2 0 0 0 4 -3 }}). Therefore 17576/14641 ({{Monzo| 3 0 0 0 -4 3 }}), which is a stack of three [[13/8]]'s minus four [[11/8]]'s, approximates [[6/5]], the classical minor 3rd.


{{Infobox interval|Color name=3o<sup>3</sup>1u<sup>4</sup>g2 ,Tritho-quadlu-agu 2nd|Comma=yes|Name=Kuragesma|Ratio=43940/43923}}
== Etymology ==
The name was proposed by [[User:原井玉葱郎|Misohito Nakai]] in 2025, named after his girlfriend ([https://x.com/l0X_________ 蒼瀬くらげ]) who was interested in Xenharmonics.


Therefore 17576/14641, combination of four stack of [[16/11|8/11]] and thrree stack of [[13/8]] , approximates [[6/5]] , a pure minor 3rd.
[[Category:Commas named after individuals]]
 
== Ethymology ==
The name was proposed by [[User:原井玉葱郎|Misohito Nakai]] in 2025, Named after his girlfriend who was interested in Xenharmonic.

Latest revision as of 19:37, 8 February 2026

Interval information
Ratio 43940/43923
Factorization 22 × 3-1 × 5 × 11-4 × 133
Monzo [2 -1 1 0 -4 3
Size in cents 0.6699288¢
Name Kuragesma
Color name 3o31u4y2 ,Tritho-aquadlu-ayo 2nd
FJS name [math]\displaystyle{ \text{m2}^{5,13,13,13}_{11,11,11,11} }[/math]
Special properties reduced
Tenney norm (log2 nd) 30.8459
Weil norm (log2 max(n, d)) 30.8465
Wilson norm (sopfr(nd)) 95
Comma size unnoticeable
Open this interval in xen-calc

43940/43923, the Kuragesma, is a no-sevens 13-limit unnoticeable comma measuring about 0.66993  ¢. It is the difference between 5/3, the classical major 6th, and 14641/8788 ([-2 0 0 0 4 -3). Therefore 17576/14641 ([3 0 0 0 -4 3), which is a stack of three 13/8's minus four 11/8's, approximates 6/5, the classical minor 3rd.

Etymology

The name was proposed by Misohito Nakai in 2025, named after his girlfriend (蒼瀬くらげ) who was interested in Xenharmonics.