513/512: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Name = undevicesimal comma, undevicesimal schisma, Boethius' comma
| 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 comma''', '''undevicesimal schisma''' 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)]].  


== Temperaments ==
== Temperaments ==
: ''"Boethius" redirects here. For the medieval Roman platonist, see [[Anicius Manlius Severinus Boethius]].''
{{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 enables the [[boethius chords]]. See [[No-fives subgroup temperaments #Boethian]].
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 [[Helmholtz-Ellis notation]] as the formal comma to translate a Pythagorean interval to a nearby undevicesimal interval.
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 ===