Rin comma

Interval information

Ratio	1977326743/1953125000
Factorization	2-3 × 5-12 × 711
Monzo	[-3 0 -12 11⟩
Size in cents	21.3204¢
Name	Rin comma
Color name	zg11 -ma
FJS name	[math]\displaystyle{ - }[/math]
Special properties	reduced
Tenney norm (log2 nd)	61.744
Weil norm (log2 max(n, d))	61.7618
Wilson norm (sopfr(nd))	143
Comma size	small
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The rin comma, 1977326743/1953125000 = [-3 0 -12 11⟩, is a 2.5.7-subgroup comma measuring about 21.32 cents. It is the comma which equates 5/4 with a stack of eleven 7/5s.

Etymology

It was named by Kaisei in 2026 from kanji of 隣(rin), meaning “neighboring” or “adjacent”, since it was found while investigating approximations to 5/4 generated by stacks of adjacent-prime ratios(e.g. 7/5, 11/7).