981edo: Difference between revisions

Cleanup; clarify the title row of the rank-2 temp table
Adopt template: Factorization; misc. cleanup
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== Theory ==
== Theory ==
981edo is a good 13- and 17-limit system, [[consistent]] to the [[17-odd-limit]]. The equal temperament [[Tempering out|tempers out]] [[2080/2079]], [[2401/2400]], 2431/2430, [[4096/4095]], [[4225/4224]], [[4375/4374]], 4459/4455 and 4914/4913 in the 17-limit. It provides the [[optimal patent val]] for 13-limit [[ennealimmic]], the rank-3 temperament tempering out 2080/2079, 2401/2400, and 4375/4374, and for 13-limit [[ennealimmia]], which also tempers out 4096/4095.  
981edo is a good 13- and 17-limit system, [[consistent]] to the [[17-odd-limit]]. The equal temperament [[Tempering out|tempers out]] [[2080/2079]], [[2401/2400]], [[2431/2430]], [[4096/4095]], [[4225/4224]], [[4375/4374]], 4459/4455 and [[4914/4913]] in the 17-limit. It provides the [[optimal patent val]] for 13-limit [[ennealimmic]], the rank-3 temperament tempering out 2080/2079, 2401/2400, and 4375/4374, and for 13-limit [[ennealimmia]], which also tempers out 4096/4095.  


=== Prime harmonics ===
=== Prime harmonics ===
Line 9: Line 9:


=== Subsets and supersets ===
=== Subsets and supersets ===
Since 981 = 3<sup>2</sup> × 109, 981edo has subset edos 3, 9, 109, and 327.
Since 981 = {{factorization|981}}, 981edo has subset edos 3, 9, 109, and 327.


== Regular temperament properties ==
== Regular temperament properties ==
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| 2.3
| 2.3
| {{monzo| 1555 -981 }}
| {{monzo| 1555 -981 }}
| [{{val| 981 1555 }}]
| {{mapping| 981 1555 }}
| -0.0586
| -0.0586
| 0.0586
| 0.0586
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| 2.3.5
| 2.3.5
| {{monzo| 1 -27 18 }}, {{monzo| 85 -17 -25 }}
| {{monzo| 1 -27 18 }}, {{monzo| 85 -17 -25 }}
| [{{val| 981 1555 2278 }}]
| {{mapping| 981 1555 2278 }}
| -0.0722
| -0.0722
| 0.0515
| 0.0515
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| 2.3.5.7
| 2.3.5.7
| 2401/2400, 4375/4374, {{monzo| 79 -25 -23 5 }}
| 2401/2400, 4375/4374, {{monzo| 79 -25 -23 5 }}
| [{{val| 981 1555 2278 2754 }}]
| {{mapping| 981 1555 2278 2754 }}
| -0.0385
| -0.0385
| 0.0562
| 0.0562
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| 2.3.5.7.11
| 2.3.5.7.11
| 2401/2400, 4375/4374, 131072/130977, 1771561/1771470
| 2401/2400, 4375/4374, 131072/130977, 1771561/1771470
| [{{val| 981 1555 2278 2754 3394 }}]
| {{mapping| 981 1555 2278 2754 3394 }}
| -0.0630
| -0.0630
| 0.0545
| 0.0545
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| 2.3.5.7.11.13
| 2.3.5.7.11.13
| 2080/2079, 2401/2400, 4096/4095, 4375/4374, 1771561/1771470
| 2080/2079, 2401/2400, 4096/4095, 4375/4374, 1771561/1771470
| [{{val| 981 1555 2278 2754 3394 3630 }}]
| {{mapping| 981 1555 2278 2754 3394 3630 }}
| -0.0453
| -0.0453
| 0.0636
| 0.0636
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| 2.3.5.7.11.13.17
| 2.3.5.7.11.13.17
| 2080/2079, 2401/2400, 2431/2430, 4096/4095, 4375/4374, 4914/4913
| 2080/2079, 2401/2400, 2431/2430, 4096/4095, 4375/4374, 4914/4913
| [{{val| 981 1555 2278 2754 3394 3630 4010 }}]
| {{mapping| 981 1555 2278 2754 3394 3630 4010 }}
| -0.0473
| -0.0473
| 0.0591
| 0.0591
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! Generator*
! Generator*
! Cents*
! Cents*
! Associated<br>Ratio
! Associated<br>Ratio*
! Temperaments
! Temperaments
|-
|-
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| 500.306
| 500.306
| 8192/6137
| 8192/6137
| [[Langwidge]] (2.17.19 subgroup)
| [[Protolangwidge]]
|-
|-
| 9
| 9