513/512: Difference between revisions
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{{Infobox Interval | {{Infobox Interval | ||
| Name = undevicesimal | | Name = undevicesimal schisma, undevicesimal formal comma, Boethius' comma | ||
| Color name = L19o1, lano 1sn, <br>Lano comma | | Color name = L19o1, lano 1sn, <br>Lano comma | ||
| Comma = yes | | Comma = yes | ||
}} | }} | ||
'''513/512''', the '''undevicesimal schisma''', '''undevicesimal formal comma''' or '''Boethius' comma''', is an [[Unnoticeable comma|unnoticeable]] [[19-limit]] (also 2.3.19 [[subgroup]]) comma. It is the amount by which [[19/16]] exceeds the [[32/27|Pythagorean minor third (32/27)]] and by which [[24/19]] falls short of the [[81/64|Pythagorean major third (81/64)]]. | |||
'''513/512''', the '''undevicesimal | |||
== Temperaments == | == Temperaments == | ||
{{Redirect|Boethius|the medieval Roman platonist|Anicius Manlius Severinus Boethius}} | |||
By tempering out this comma in the 19-limit is defined the '''boethius temperament''', or in the 2.3.19 subgroup, the '''boethian temperament'''. Both | By tempering out this comma in the 19-limit is defined the '''boethius temperament''', or in the 2.3.19 subgroup, the '''boethian temperament'''. Both enable the [[boethius chords]]. See [[No-fives subgroup temperaments #Boethian]]. | ||
== Notation == | == Notation == | ||
This comma is significant in [[Functional Just System]] and [[ | This comma is significant in [[Functional Just System]] and [[Helmholtz–Ellis notation]] as the formal comma to translate a Pythagorean interval to a nearby undevicesimal interval. | ||
=== Sagittal notation === | === Sagittal notation === | ||