3125edo: Difference between revisions

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{{Infobox ET}}
{{Infobox ET}}
{{EDO intro|3125}}
{{ED intro}}


== Theory ==
== Theory ==
3125edo is distinctly [[consistent]] through the [[15-odd-limit]]. A basis for its 7-limit commas is 78125000/78121827, 645700815/645657712 and 281484423828125/281474976710656. In the 11-limit, 151263/151250, 820125/819896, 21437500/21434787 and [[Quartisma|117440512/117406179]] are tempered out – it should be noted this edo is so far the only one [https://en.xen.wiki/index.php?title=3125edo&oldid=7860 known to have been confirmed] as tempering out 117440512/117406179 prior to the independent discovery of this comma's significance as the difference between a stack of five [[33/32]] quartertones and one [[7/6]] subminor third. In the 13-limit, 6656/6655, 123201/123200, 140625/140608, 151263/151250 and 1399680/1399489 are all tempered out.
3125et is notable for being an extremely strong [[7-limit]] system. It is also [[consistent]] through the [[15-odd-limit]], and except for [[17/11]], [[19/17]] and their [[octave complement]]s, it is consistent to the [[35-odd-limit]].  


3125 = 5<sup>5</sup> , and as such it is the 5th edo of the form x^x. It hhas subset edos 5, 25, 125, and 625.
A basis for its 7-limit commas is [[78125000/78121827]], [[645700815/645657712]] and 281484423828125/281474976710656. In the [[11-limit]], [[151263/151250]], 820125/819896, 21437500/21434787 and [[quartisma|117440512/117406179]] are tempered out—it should be noted this edo is so far the only one [https://en.xen.wiki/index.php?title=3125edo&oldid=7860 known to have been confirmed] as tempering out 117440512/117406179 prior to the independent discovery of this comma's significance as the difference between a stack of five [[33/32]] quartertones and one [[7/6]] subminor third. In the [[13-limit]], [[6656/6655]], [[123201/123200]], [[140625/140608]] and 1399680/1399489 are all tempered out.
 
In the 2.5.11.13.19.23.29.31 subgroup, it supports a temperament called estates general, described as 1789 & 3125.  


=== Prime harmonics ===
=== Prime harmonics ===
{{Harmonics in equal|3125|columns=11}}
{{Harmonics in equal|3125|columns=11}}
{{Harmonics in equal|3125|columns=11|start=12|collapsed=true|title=Approximation of prime harmonics in 3125edo (continued)}}


=== Miscellaneous properties ===
=== Subsets and supersets ===
The fact that 3125 = 5<sup>5</sup> makes curious notations possible based on the symmetric base 5 positional number system, by converting the number to base 5 with digits {-2, -1, 0, 1, 2}.  
{{nowrap| 3125 {{=}} 5<sup>5</sup> }}, and as such 3125edo is the 5th edo of the form ''n''<sup>''n''</sup>. It has subset edos {{EDOs| 5, 25, 125, and 625 }}.


== Regular temperament properties ==
== Regular temperament properties ==
3125et is notable for being an extremely strong 7-limit system, being the first equal division past [[171edo]] with a lower [[Tenney-Euclidean temperament measures #TE simple badness|relative error]].
3125et is the first equal temperament past [[171edo|171]] with a lower [[Tenney–Euclidean temperament measures #TE simple badness|relative error]].  


=== Rank-2 temperaments ===
=== Rank-2 temperaments ===
{| class="wikitable center-all left-5"
{| class="wikitable center-all left-5"
! Periods<br>per Octave
|+ style="font-size: 105%;" | Table of rank-2 temperaments by generator
! Generator<br>(Reduced)
|-
! Cents<br>(Reduced)
! Periods<br>per 8ve
! Associated<br>Ratio
! Generator*
! Cents*
! Associated<br>ratio*
! Temperaments
! Temperaments
|-
|-
|1
| 1
|139\3125
| 139\3125
|53.376
| 53.376
|33/32
| 33/32
|[[Prequartismic]]
| [[Prequartismic]]
|-
| 1
| 411\3125
| 157.824
| 36756909/33554432
| [[Hemiegads]]
|-
| 1
| 577\3125
| 221.568
| 8388608/7381125
| [[Fortune]]
|-
| 1
| 822\3125
| 315.648
| 6/5
| [[Egads]]
|-
| 1
| 894\3125
| 343.296
| 8000/6561
| [[Raider]]
|-
|-
| 1
| 1
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| 80275/59392
| 80275/59392
| [[Estates general]]
| [[Estates general]]
|-
| 1
| 1412\3125
| 542.208
| 16807/12288
| [[Revopent]]
|}
|}
<nowiki/>* [[Normal forms #Equave-reduced-generator form|Octave-reduced form]], reduced to the first half-octave, and [[normal forms #Minimal-generator form|minimal form]] in parentheses if distinct
== Music ==
; [[Eliora]]
* [https://www.youtube.com/watch?v=mnTF1vBexBg ''Etude for Gamelan in Estates General and Pentonismic''] (2023)


[[Category:Equal divisions of the octave|####]] <!-- 4-digit number -->
[[Category:Quartismic]]
[[Category:Quartismic]]
[[Category:Listen]]