Anthill comma: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Name = Anthill comma
| Ratio = 532400/531441
| Name = anthill comma, tetracot schisma
| Color name = s1o<sup>3</sup>yy1, satrilo-ayoyo 1sn
| Color name = s1o<sup>3</sup>yy1, satrilo-ayoyo 1sn
| Comma = yes
| Comma = yes
}}
}}


'''532400/531441''', the '''anthill comma''', is an [[unnoticeable comma|unnoticeable]] [[11-limit]] comma that splits the [[ptolemisma]] into two [[rastma]]s and equates a stack of two [[syntonic comma]]s with [[1331/1296]], the Alpharabian parachromatic semilimma.  In addition, it can be identified as the interval separating an octave-reduced stack of two [[729/484]] Alphrabian wide fifths from a [[25/22]] ptolemismic whole tone, and, it is the sum of the [[wizardharry comma]] and the [[parimo]].
'''532400/531441''', the '''anthill comma''', is an [[unnoticeable comma|unnoticeable]] [[11-limit]] comma that splits the [[ptolemisma]] into two [[rastma]]s, equates a stack of three instances of [[88/81]] with [[32/25]], and equates a stack of two [[syntonic comma]]s with [[1331/1296]], the Alpharabian parachromatic semilimma.  In addition, it can be identified as the interval separating an octave-reduced stack of two [[729/484]] Alphrabian wide fifths from a [[25/22]] ptolemismic whole tone, and, it is the sum of the [[wizardharry comma]] and the [[parimo]].


== Etymology ==
== Etymology ==
532400 / 531441 = ~1.001805. The comma is named after [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949665/ PLoS Biol. 2014 Mar; 12(3): e1001805.], which is the paper ''The Ecology of Collective Behavior'' by Deborah M. Gordon. The paper discusses the emergent top-down and bottom-up behaviour of systems containing a number of individual organisms, and extensively discusses how the behaviour of the ant emerges from the anthill, yet the behaviour of the anthill emerges from the ant, in a kind of self-sustaining loop.
[[Budjarn Lambeth]] named the "anthill comma" after [https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949665/ PLoS Biol. 2014 Mar; 12(3): e1001805.] (''The Ecology of Collective Behavior'' by Deborah M. Gordon), a paper about ant colonies. This referenced the comma’s ratio: 532400 / 531441 = ~1.001805.
 
XA [[Discord]] user Neutraldown also proposed the name "tetracot schisma" for this comma, because it is in the [[schisma]] size range and is [[tempered out]] by [[tetracot]] temperament. This deliberately parallels the name of the [[tetracot kleisma]].
 
[[Category:Commas named for their regular temperament properties]]
[[Category:Tetracot]]