Sinarabian comma: Difference between revisions
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The '''Sinarabian comma''' is an [[13-limit]] (also 2.3.11.13 subgroup) [[unnoticeable comma]] with a ratio of '''85293/85184''' and a value of approximately 2 cents. | The '''Sinarabian comma''' is an [[13-limit]] (also 2.3.11.13 subgroup) [[unnoticeable comma]] with a ratio of '''85293/85184''' and a value of approximately 2 cents. | ||
This comma is identifiable as the amount by which a stack of two [[88/81]] artoneutral seconds falls short of a [[13/11]] Neo-Gothic minor third, and also the amount by which a stack of three [[11/9]] artoneutral thirds fall short of [[117/64]], and even the comma that separates [[1053/1024]] and [[1331/1296]]. | |||
In terms of comma relations, it separates [[243/242]] from [[352/351]], separates [[144/143]] from a stack of two instances of 243/242, and, is the sum of the [[frameshift comma]] and the [[tridecapyth comma]]. | |||
== Etymology == | |||
The name of this comma comes from a portmanteau of "Ibn Sina" and "Alpharabian", and was given by [[Aura]] on the basis of a series of connections between intervals that he found and shared with [[Margo Schulter]], who took note of a variety of implications, the details of which will be added to this article later. | |||
[[Category:Commas named after polymaths]] |