Revopentisma: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
|Monzo = 47 4 0 -19
| Monzo = 47 4 0 -19
|Name = revopentisma
| Name = revopentisma
|Comma = yes
| Color name = ssr<sup>19</sup>-8, sasa-neru negative octave
| Comma = yes
}}
}}
Revopentisma is a 7-limit (and also 2.3.7 subgroup) unnoticeable comma associated with very high accuracy temperaments.
The '''revopentisma''' is an [[unnoticeable comma|unnoticeable]] [[7-limit]] (specifically [[2.3.7 subgroup|2.3.7-subgroup]]) [[comma]] associated with [[very high accuracy temperaments]].
== Theory ==
 
Revopentisma arises out of temperament-merging 1848edo and 3125edo in the 7-limit, as both of these edos are very precise in that limit. The associated temperament is named '''revopent''', and it's remarkable in its short generator chains for edos in the thousands, with 7/4 being just four generators down and 3/2 being just nineteen, with octave reduction. Tempering it out in the full 7-limit produces rank-3 '''revopentismic''' temperament, as well as the 2.3.7 rank-2 '''revopentic''' temperament. The rank-2 revopent temperament adds mapping for 5 where it is reached in 287 generators.
== Temperaments ==
The revopentisma is the comma shared by [[31edo]] and [[135edo]] in the [[2.3.7 subgroup]] and is notable as [[support]]ed by many [[mega-edo]]s. Tempering it out in the full 7-limit produces rank-3 '''revopentismic''' temperament, as well as the 2.3.7 rank-2 [[revopentic]] temperament. The latter is remarkable in its short generator chains for edos in the thousands, with [[7/4]] being just four generators away and [[3/2]] being just nineteen, with octave reduction. The [[revopent]] temperament adds mapping for 5 where it is reached in 287 generators.
 
== Etymology ==
== Etymology ==
Comma's name is derived from two edos in the temperament-merging, number 1848 being associated with a year with a large number of revolutions in Europe, and 3125 being equal to 5 to the power of 5, hence pent- meaning five.
This comma was named by [[Eliora]] in 2023, and was derived from two of its supporting [[equal temperament]]s, number 1848 being associated with a year with a large number of revolutions in Europe, and 3125 being equal to 5 to the power of 5, hence pent- meaning five.
 
[[Category:Commas named for other reasons]]