Symbiotic comma: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Icon =
| Ratio = 19712/19683
| Ratio = 19712/19683
| Monzo = 8 -9 0 1 1
| Name = symbiotic comma, symbiosis, symbiosma
| Cents = 2.54884
| Color name = s1oz2, Salozo comma
| Name = symbiosis comma, <br> symbiotic comma, <br> symbiosma
| Comma = yes
| Color name =
| FJS name =
| Sound =  
}}
}}


'''19712/19683''', the '''symbiosis comma''', also known as the '''symbiotic comma''' or '''symbiosma''', is an [[11-limit]] [[unnoticeable comma]] measuring about 2.55 cents. It gets its names from the fact that it is tempered out in such notable temperaments as [[Vishnuzmic family #Vishnu|vishnu]], [[Breedsmic temperaments #Newt|newt]], [[Mirkwai clan #Kwai|kwai]], [[Hemifamity temperaments #Supers|supers]], [[Schismatic family #Guiron|guiron]] and [[Amity family|amity]], and, from the fact that it also makes a good extension to a number of other temperaments such as [[Canou family|canou]]. It is the difference between an [[2187/2048|apotome (2187/2048)]] and an [[77/72|undecimal secor (77/72)]]- the latter of which can be broken down into a [[33/32]] quartertone stacked on top of [[28/27]].  Alternatively stated, it identifies [[11/8]] by an apotome over [[9/7]].  Moreover, it is the sum of the [[quartisma]] and the [[nexisma]]. Tempering out this comma in a linearly independent fashion results in '''symbiotic temperament'''.
'''19712/19683''', the '''symbiotic comma''', also known as the '''symbiosis''' or '''symbiosma''', is an [[unnoticeable comma|unnoticeable]] [[11-limit]] [[comma]] measuring about 2.55 [[cent]]s. It gets its names from the fact that it is tempered out in such notable temperaments as [[vishnu]], [[newt]], [[kwai]], [[supers]], [[guiron]] and [[amity]], and, from the fact that it also makes a good extension to a number of other temperaments such as [[canou family|canou]]. It is the difference between an [[2187/2048|apotome (2187/2048)]] and an [[77/72|undecimal secor (77/72)]] the latter of which can be broken down into a quartertone of [[33/32]] stacked on top of a third-tone of [[28/27]].  


== See also ==
It factors into ([[4375/4374]])⋅([[5632/5625]]), and moreover, into the [[quartisma]] and the [[nexus comma]]. In the [[19-limit]], it factors neatly into ([[1216/1215]])⋅([[1540/1539]]).
* [[Unnoticeable comma]]
 
== Temperaments ==
[[Tempering out]] this comma in the 11-limit results in the rank-4 '''symbiotic temperament''' (→ [[Rank-4 temperament #Symbiotic (19712/19683)]]). This temperament identifies [[11/8]] by an apotome over [[9/7]], [[11/6]] by an apotome over [[12/7]], and [[11/9]] by an apotome over [[8/7]]. Finally, it identifies 11/9 by a [[256/243|limma]] below 9/7.


[[Category:11-limit]]
[[Category:Unnoticeable commas]]
[[Category:Symbiotic]]
[[Category:Symbiotic]]
[[Category:Commas named for their regular temperament properties]]