375/374: Difference between revisions

"Septendecimal wholetones comma" is sus. +subgroup temp name; +etymology
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{{Infobox Interval
{{Infobox Interval
| Name = ursulisma
| Name = ursulisma, ursulic comma
| Color name =
| Color name = 17u1uy<sup>3</sup>-2, sulutriyo negative 2nd
| Comma = yes
| Comma = yes
}}
}}
 
The '''ursulisma''', or '''ursulic comma''', is a [[17-limit]] (also 2.3.5.11.17 [[subgroup]]) [[superparticular]] [[comma]] with a [[ratio]] of '''375/374'''. It is the interval that separates [[17/15]] from [[25/22]], as well as separating [[25/17]] from [[22/15]].
The '''ursulisma''' is a [[17-limit]] (also 2.3.5.11.17 [[subgroup]]) [[superparticular]] [[comma]] with a [[ratio]] of '''375/374'''. It is the interval that separates [[17/15]] from [[25/22]], as well as separating [[25/17]] from [[22/15]]. It has also been described as the ''septendecimal wholetones comma'' (though the whole tones it separates are not septendecimal as one of them is not [[Harmonic class|HC17]] and the other is not of the 2.3.17 subgroup).  


== Commatic relations ==
== Commatic relations ==
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== Temperaments ==
== Temperaments ==
Tempering out this comma in the 17-limit leads to the rank-6 '''ursulismic temperament'''. Tempering it out in the 2.3.5.11.17 subgroup leads to the rank-4 '''ursulic temperament'''.  
Tempering out this comma in the 17-limit leads to the rank-6 '''ursulismic temperament'''. Tempering it out in the 2.3.5.11.17 subgroup leads to the rank-4 '''ursulic temperament''', enabling [[ursulismic chords]]. You may find a list of good equal temperaments that support these temperaments below.
 
=== Ursulismic ===
[[Subgroup]]: 2.3.5.7.11.13.17
 
[[Mapping]]: <br>
{| class="right-all"
|-
| [⟨ || 1 || 0 || 0 || 0 || 0 || 0 || -1 || ],
|-
| ⟨ || 0 || 1 || 0 || 0 || 0 || 0 || 1 || ],
|-
| ⟨ || 0 || 0 || 1 || 0 || 0 || 0 || 3 || ],
|-
| ⟨ || 0 || 0 || 0 || 1 || 0 || 0 || 0 || ],
|-
| ⟨ || 0 || 0 || 0 || 0 || 1 || 0 || -1 || ],
|-
| ⟨ || 0 || 0 || 0 || 0 || 0 || 1 || 0 || ]]
|}
 
: mapping generators: ~2, ~3, ~5, ~7, ~11, ~13
 
[[Optimal tuning]] ([[CTE]]): ~2 = 1\1, ~3/2 = 701.8093, ~5/4 = 385.3757, ~7/4, ~11/8 = 552.0120, ~13/8
 
{{Optimal ET sequence|legend=1| 12f, 15g, 16, 19g, 22, 27eg, 29g, 31, 38df, 41g, 43, 49fg, 50, 53, 60e, 65d, 72, 103, 121, 152fg, 159, 171, 193, 224, 296, 395e, 467, 554g, 691eg }}
 
=== Ursulic ===
[[Subgroup]]: 2.3.5.11.17
 
{{Mapping|legend=2| 1 0 0 0 -1 | 0 1 0 0 1 | 0 0 1 0 3 | 0 0 0 1 -1 }}
 
: sval mapping generators: ~2, ~3, ~5, ~11
 
[[Optimal tuning]] ([[CTE]]): ~2 = 1\1, ~3/2 = 701.8093, ~5/4 = 385.3757, ~11/8 = 552.0120
 
{{Optimal ET sequence|legend=1| 12, 15g, 19g, 22, 31, 34, 50, 53, 56, 60e, 65, 72, 137, 159, 296, 455, 489 }}


== Etymology ==
== Etymology ==
The ursulisma was named by [[Aura]] and [[User:VIxen|VIxen]] in 2023. It refers to [[Wikipedia: 375 Ursula|375 Ursula]], the asteroid. After some naming attempts in the XA Discord Server that tuned out dissatisfactory to the participants, VIxen came up with the idea to look up the [[Wikipedia: List of minor planets|list of minor planets]] in case everything else failed. And Aura was the first to put together the word ''ursulisma''.
The ursulisma was named by [[Aura]] and [[User:VIxen|VIxen]] in 2023. It refers to [[Wikipedia: 375 Ursula|375 Ursula]], the asteroid. After some naming attempts in the XA Discord Server that turned out dissatisfactory to the participants, VIxen came up with the idea to look up the [[Wikipedia: List of minor planets|list of minor planets]] in case everything else failed, and Aura was the first to put together the word ''ursulisma''.
 
The origin for the asteroid’s own name is unknown.
 
[[Category:Ursulismic]]
[[Category:Commas named after asteroids]]