Chrysia: Difference between revisions
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| Ratio = 43923/43904 | | Ratio = 43923/43904 | ||
| Name = chrysia | | Name = chrysia | ||
| Color name = | | Color name = Qualo-atriruma, 4*1ua3*rM | ||
| Comma = | | Comma = Chrysia | ||
}} | }} | ||
The '''chrysia''' ( | The '''chrysia''' ({{monzo|legend=1| -7 1 0 -3 4 }}, [[ratio]]: 43923/43904) is an [[unnoticeable comma|unnoticeable]] [[11-limit]] (also [[2.3.7.11 subgroup|2.3.7.11-]][[subgroup]]) [[comma]] measuring about 0.749 [[cent]]s. It is the amount by which three intervals of [[11/7]] and [[33/32]] exceed two octaves. | ||
It factors into simpler [[superparticular]] commas as ([[3025/3024]])⋅([[9801/9800]]). | |||
== Temperaments == | == Temperaments == | ||
Alongside the [[olympia]] (131072/130977) and [[41503/41472|argyria]] (41503/41472), this comma is tempered in the representation of 2.3.7.11 by [[135edo]]. Among the various 2.3.7.11 micro-commas of 135edo, this comma is notable for having only a single power of 3 in it, allowing 3 to be represented by 2.7.11 subgroup intervals. One notable example is given by [[ | [[Tempering out]] this comma in the full 11-limit results in the rank-4 chrysic temperament (→ [[Catalog of rank-4 temperaments #Chrysic (43923/43904)]]), and in the 2.3.7.11 subgroup, the rank-3 chrysian temperament. | ||
Alongside the [[olympia]] (131072/130977) and [[41503/41472|argyria]] (41503/41472), this comma is tempered out in the representation of the 2.3.7.11 subgroup by [[135edo]]. Among the various 2.3.7.11-subgroup micro-commas of 135edo, this comma is notable for having only a single power of 3 in it, allowing 3 to be represented by 2.7.11-subgroup intervals. One notable example is given by [[no-fives subgroup temperaments #Chrysanthemum|chrysanthemum]] temperament, which tempers out the chrysia alongside the [[amaranthine comma]] to provide a 2.3.7.11 interpretation of a chain of nearly pure [[7/4]]'s with errors less than 0.1 cents. | |||
== Etymology == | == Etymology == | ||
The chrysia was named by [[User:VIxen|VIxen]] in 2025, on the pattern of the [[argyria]], after Chryse Planitia on Mars and the legendary island of Chryse. | The chrysia was named by [[User:VIxen|VIxen]] in 2025, on the pattern of the [[argyria]], after Chryse Planitia on Mars and the legendary island of Chryse. | ||
It was previously named the | It was previously named the ''hemigail comma'' by an unknown wiki contributor some time before 2025 (the name appeared on the page Unnoticeable commas). | ||
[[Category:Commas named after place names]] | [[Category:Commas named after place names]] | ||