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{{todo|Finish the article and move it|inline=1|comment=When the article is finished and the table explained, move it to the main root}}
== Context ==


For each pair of superparticular ratios <math>{s1}/{s2}</math>​ and <math>{s2}/{s3}</math>, there exists a ratio <math>{a}/{b}</math> such that <math>{s1}/{s2}</math>​ and <math>{s2}/{s3}</math>​ are <math>{a}/{b}</math> complementary; it is observed that <math>a−b=1</math> or <math>a−b=2</math>.
Read this first: [[Equal-step_tuning#Alpha-beta-gamma_family_of_equal_divisions]]
In other words, for each ratio <math>a/b</math> where <math>a−b=1</math> or <math>a−b=2</math>, there exists a pair of superparticular ratios <math>{s1}/{s2}</math>​ and <math>{s2}/{s3}</math> that are <math>{a}/{b}</math> complementary.


Bellow is a table that show for equal divisions of <math>a/b</math> the cent error in the mapping of superparticular ratios <math>{s1}/{s2}</math>​ and <math>{s2}/{s3}</math> that are <math>a/b</math> complementary.
== The Alpha-Beta-Gamma family ==
 
We can observe a converging sequence and pattern for low errors: 5, 7, 12; then 7, 9, 16; then 9, 11, 20; then 11, 13, 24; then 13, 15, 28; then 15, 17, 32; then 17, 19, 36; then 19, 21, 40; then 21, 23, 44; etc. --
 
{{todo|Tables|inline=1|comment=Explain the tables.}}
 
{{todo|Pattern|inline=1|comment=Clarify the observed pattern and create a descriptive name for it, such as the "Alpha-Beta-Gamma pattern" or the "Alpha-Beta-Gamma class" when referring to the group of scales. Assign distinct names to each scale within this class. For instance, 5edo might be called "2/1 Alpha", 7edo could be "2/1 Beta", and 12edo could be "2/1 Gamma". Additionally, compute the Dave Benson optimization for each scale as an alternative tuning. Note: 23edo with stretched octave is "7/5 Alpha".
Consider this second version for naming: "Alpha 2/1, Beta 2/1, Gamma 2/1, Alpha 7/5." Consistency and Clarity: The second version ("Alpha 2/1, Beta 2/1, Gamma 2/1, Alpha 7/5") places the descriptive name ("Alpha," "Beta," "Gamma") before the ratio. This makes it clear that "Alpha," "Beta," "Gamma," and so on are categories or types, while "2/1" and "7/5" are specific tunings or ratios within those categories. This ordering helps maintain a logical structure that is easier to follow.}}
 
{{todo|Add data|inline=1|comment=Include columns for the following optimizations: Pure Equave, Dave Benson, TE, POTE, and CTE. To prevent the table from becoming overcrowded, choose between using cents or EDO. Cents are preferable since these are EDONOI. Retain the EDO column for pure equaves to provide a sense of scale, but place it outside the optimization subgroup column.}}


{| class="wikitable"
{| class="wikitable"
|+
|+
|-
|-
! colspan="2" | Intervals !! colspan="2" | Tuning !! colspan="2" | Mapping !! colspan="4" | Various optimizations
! colspan="3" | Tuning !! colspan="2" | Intervals !! colspan="2" | Mappings
|-
|-
! Name
! Equal division
! Steps per octave
! Equave
! Equave
! SSCP
! SSC pair
! Equal division
! Steps (Equave, SSC pair)
! Name
! Errors (cent)
! Mappings (Equave, SSCP)
! Errors
! Pure Equave (EDO)
! Pure Equave (Cent)
! Dave Benson (EDO)
! Dave Benson (Cent)
|-
|-
| [[Alpha 3/1]]
| [[3edt|3ed3/1]]
| 1.89278926071437
| rowspan="3" | 3/1
| rowspan="3" | 3/1
| rowspan="3" | 2/1, 3/2
| rowspan="3" | 2/1, 3/2
| [[3edt|3ed3/1]]
| [[Alpha 3/1]]
| 3\3<3/1>, 2\3<3/1>, 1\3<3/1>
| 3\3<3/1>, 2\3<3/1>, 1\3<3/1>
| 0, 67.970, -67.970
| 0, 67.970, -67.970
| 1.89278926071437
| 633.985000288462
| 1.90739592696007
| 629.130000247254
|-
|-
| [[Beta 3/1]]
| [[5edt|5ed3/1]]
| [[5edt|5ed3/1]]
| [[Beta 3/1]]
| 3.15464876785729
| 5\5<3/1>, 3\5<3/1>, 2\5<3/1>
| 5\5<3/1>, 3\5<3/1>, 2\5<3/1>
| 0, -58.827, 58.827
| 0, -58.827, 58.827
| 3.15464876785729
| 380.391000173077
| 3.14186231690763
| 381.939079106782
|-
|-
| [[Gamma 3/1]]
| [[8edt|8ed3/1]]
| [[8edt|8ed3/1]]
| [[Gamma 3/1]]
| 5.04743802857166
| 8\8<3/1>, 5\8<3/1>, 3\8<3/1>
| 8\8<3/1>, 5\8<3/1>, 3\8<3/1>
| 0, -11.278, 11.278
| 0, -11.278, 11.278
| 5.04743802857166
| 237.744375108173
| 5.04255621376059
| 237.974540913462
|-
|-
| [[Alpha 2/1]]
| [[5edo|5ed2/1]]
| 5
| rowspan="3" | 2/1
| rowspan="3" | 2/1
| rowspan="3" | 3/2, 4/3
| rowspan="3" | 3/2, 4/3
| [[5edo|5ed2/1]]
| [[Alpha 2/1]]
| 5\5<2/1>, 3\5<2/1>, 2\5<2/1>
| 5\5<2/1>, 3\5<2/1>, 2\5<2/1>
| 0, 18.045, -18.045
| 0, 18.045, -18.045
| 5.00000000000000
| 240.000000000000
| 5.00991270509077
| 239.525131601721
|-
|-
| [[Beta 2/1]]
| [[7edo|7ed2/1]]
| [[7edo|7ed2/1]]
| [[Beta 2/1]]
| 7
| 7\7<2/1>, 4\7<2/1>, 3\7<2/1>
| 7\7<2/1>, 4\7<2/1>, 3\7<2/1>
| 0, -16.241, 16.241
| 0, -16.241, 16.241
| 7.00000000000000
| 171.428571428571
| 6.99104980248710
| 171.648040552235
|-
|-
| [[Gamma 2/1]]
| [[12edo|12ed2/1]]
| [[12edo|12ed2/1]]
| [[Gamma 2/1]]
| 12
| 12\12<2/1>, 7\12<2/1>, 5\12<2/1>
| 12\12<2/1>, 7\12<2/1>, 5\12<2/1>
| 0, -1.955, 1.955
| 0, -1.955, 1.955
| 12.0000000000000
| 100.000000000000
| 11.9978480914311
| 100.017935787756
|-
|-
| [[Alpha 5/3]]
| [[7ed5/3]]
| 9.49840814199707
| rowspan="3" | 5/3
| rowspan="3" | 5/3
| rowspan="3" | 4/3, 5/4
| rowspan="3" | 4/3, 5/4
| [[7ed5/3]]
| [[Alpha 5/3]]
| 7\7<5/3>, 4\7<5/3>, 3\7<5/3>
| 7\7<5/3>, 4\7<5/3>, 3\7<5/3>
| 0, 7.303, -7.303
| 0, 7.303, -7.303
| 9.49840814199707
| 126.336958999921
| 9.50583353877785
| 126.238272015258
|-
|-
| [[Beta 5/3]]
| [[9ed5/3]]
| [[9ed5/3]]
| [[Beta 5/3]]
| 12.2122390397105
| 9\9<5/3>, 5\9<5/3>, 4\9<5/3>
| 9\9<5/3>, 5\9<5/3>, 4\9<5/3>
| 0, -6.735, 6.735
| 0, -6.735, 6.735
| 12.2122390397105
| 98.2620792221608
| 12.2053823008782
| 98.3172808862904
|-
|-
| [[Gamma 5/3]]
| [[16ed5/3]]
| [[16ed5/3]]
| [[Gamma 5/3]]
| 21.7106471817076
| 16\16<5/3>, 9\16<5/3>, 7\16<5/3>
| 16\16<5/3>, 9\16<5/3>, 7\16<5/3>
| 0, -0.593, 0.593
| 0, -0.593, 0.593
| 21.7106471817076
| 55.2724195624655
| 21.7094399215509
| 55.2754932571412
|-
|-
| [[Carlos Alpha|Alpha 3/2]]
| [[9edf|9ed3/2]]
| 15.3856016221631
| rowspan="3" | 3/2
| rowspan="3" | 3/2
| rowspan="3" | 5/4, 6/5
| rowspan="3" | 5/4, 6/5
| [[9edf|9ed3/2]]
| [[Carlos Alpha|Alpha 3/2]]
| 9\9<3/2>, 5\9<3/2>, 4\9<3/2>
| 9\9<3/2>, 5\9<3/2>, 4\9<3/2>
| 0, 3.661, -3.661
| 0, 3.661, -3.661
| 15.3856016221631
| 77.9950000961542
| 15.3915238996928
| 77.9649895501219
|-
|-
| [[Carlos Beta|Beta 3/2]]
| [[11edf|11ed3/2]]
| [[11edf|11ed3/2]]
| [[Carlos Beta|Beta 3/2]]
| 18.8046242048660
| 11\11<3/2>, 6\11<3/2>, 5\11<3/2>
| 11\11<3/2>, 6\11<3/2>, 5\11<3/2>
| 0, -3.429, 3.429
| 0, -3.429, 3.429
| 18.8046242048660
| 63.8140909877625
| 18.7990736394111
| 63.8329325698408
|-
|-
| [[Carlos Gamma|Gamma 3/2]]
| [[20edf|20ed3/2]]
| [[20edf|20ed3/2]]
| [[Carlos Gamma|Gamma 3/2]]
| 34.1902258270291
| 20\20<3/2>, 11\20<3/2>, 9\20<3/2>
| 20\20<3/2>, 11\20<3/2>, 9\20<3/2>
| 0, -0.238, 0.238
| 0, -0.238, 0.238
| 34.1902258270291
| 35.0977500432694
| 34.1894540921914
| 35.0985422804417
|-
|-
| [[Alpha 7/5]]
| [[11ed7/5]]
| 22.6604698881676
| rowspan="3" | 7/5
| rowspan="3" | 7/5
| rowspan="3" | 6/5, 7/6
| rowspan="3" | 6/5, 7/6
| [[11ed7/5]]
| [[Alpha 7/5]]
| 11\11<7/5>, 6\11<7/5>, 5\11<7/5>
| 11\11<7/5>, 6\11<7/5>, 5\11<7/5>
| 0, 2.093, -2.093
| 0, 2.093, -2.093
| 22.6604698881676
| 52.9556538731173
| 22.6653911133366
| 52.9441558718088
|-
|-
| [[Beta 7/5]]
| [[13ed7/5]]
| [[13ed7/5]]
| [[Beta 7/5]]
| 26.7805553223799
| 13\13<7/5>, 7\13<7/5>, 6\13<7/5>
| 13\13<7/5>, 7\13<7/5>, 6\13<7/5>
| 0, -1.981, 1.981
| 0, -1.981, 1.981
| 26.7805553223799
| 44.8086302003300
| 26.7758951088566
| 44.8164289231577
|-
|-
| [[Gamma 7/5]]
| [[24ed7/5]]
| [[24ed7/5]]
| [[Gamma 7/5]]
| 49.4410252105475
| 24\24<7/5>, 13\24<7/5>, 11\24<7/5>
| 24\24<7/5>, 13\24<7/5>, 11\24<7/5>
| 0, -0.114, 0.114
| 0, -0.114, 0.114
| 49.4410252105475
| 24.2713413585121
| 49.4404896216012
| 24.2716042900130
|-
|-
| [[Alpha 4/3]]
| [[13ed4/3]]
| 31.3224709154917
| rowspan="3" | 4/3
| rowspan="3" | 4/3
| rowspan="3" | 7/6, 8/7
| rowspan="3" | 7/6, 8/7
| [[13ed4/3]]
| [[Alpha 4/3]]
| 13\13<4/3>, 7\13<4/3>, 6\13<4/3>
| 13\13<4/3>, 7\13<4/3>, 6\13<4/3>
| 0, 1.307, -1.307
| 0, 1.307, -1.307
| 31.3224709154917
| 38.3111537795856
| 31.3266790320926
| 38.3060074376432
|-
|-
| [[Beta 4/3]]
| [[15ed4/3]]
| [[15ed4/3]]
| [[Beta 4/3]]
| 36.1413125947981
| 15\15<4/3>, 8\15<4/3>, 7\15<4/3>
| 15\15<4/3>, 8\15<4/3>, 7\15<4/3>
| 0, -1.247, 1.247
| 0, -1.247, 1.247
| 36.1413125947981
| 33.2029999423075
| 36.1372975038827
| 33.2066890135066
|-
|-
| [[Gamma 4/3]]
| [[28ed4/3]]
| [[28ed4/3]]
| [[Gamma 4/3]]
| 67.4637835102899
| 28\28<4/3>, 15\28<4/3>, 13\28<4/3>
| 28\28<4/3>, 15\28<4/3>, 13\28<4/3>
| 0, -0.061, 0.061
| 0, -0.061, 0.061
| 67.4637835102899
| 17.7873213976647
| 67.4633901646646
| 17.7874251067289
|-
|-
| [[Alpha 9/7]]
| [[15ed9/7]]
| 41.3713123417559
| rowspan="3" | 9/7
| rowspan="3" | 9/7
| rowspan="3" | 8/7, 9/8
| rowspan="3" | 8/7, 9/8
| [[15ed9/7]]
| [[Alpha 9/7]]
| 15\15<9/7>, 8\15<9/7>, 7\15<9/7>
| 15\15<9/7>, 8\15<9/7>, 7\15<9/7>
| 0, 0.871, -0.871
| 0, 0.871, -0.871
| 41.3713123417559
| 29.0056063507767
| 41.3749871639859
| 29.0030301458200
|-
|-
| [[Beta 9/7]]
| [[17ed9/7]]
| [[17ed9/7]]
| [[Beta 9/7]]
| 46.8874873206567
| 17\17<9/7>, 9\17<9/7>, 8\17<9/7>
| 17\17<9/7>, 9\17<9/7>, 8\17<9/7>
| 0, -0.835, 0.835
| 0, -0.835, 0.835
| 46.8874873206567
| 25.5931820742147
| 46.8839609068713
| 25.5951070854196
|-
|-
| [[Gamma 9/7]]
| [[32ed9/7]]
| [[32ed9/7]]
| [[Gamma 9/7]]
| 88.2587996624126
| 32\32<9/7>, 17\32<9/7>, 15\32<9/7>
| 32\32<9/7>, 17\32<9/7>, 15\32<9/7>
| 0, -0.036, 0.036
| 0, -0.036, 0.036
| 88.2587996624126
| 13.5963779769266
| 88.2584985804157
| 13.5964243591413
|-
|-
| [[Alpha 5/4]]
| [[17ed5/4]]
| 52.8068232315916
| rowspan="3" | 5/4
| rowspan="3" | 5/4
| rowspan="3" | 9/8, 10/9
| rowspan="3" | 9/8, 10/9
| [[17ed5/4]]
| [[Alpha 5/4]]
| 17\17<5/4>, 9\17<5/4>, 8\17<5/4>
| 17\17<5/4>, 9\17<5/4>, 8\17<5/4>
| 0, 0.609, -0.609
| 0, 0.609, -0.609
| 52.8068232315916
| 22.7243361096962
| 52.8100843743057
| 22.7229328303033
|-
|-
| [[Beta 5/4]]
| [[19ed5/4]]
| [[19ed5/4]]
| [[Beta 5/4]]
| 59.0193906706024
| 19\19<5/4>, 10\19<5/4>, 9\19<5/4>
| 19\19<5/4>, 10\19<5/4>, 9\19<5/4>
| 0, -0.587, 0.587
| 0, -0.587, 0.587
| 59.0193906706024
| 20.3323007297281
| 59.0162471250305
| 20.3333837452881
|-
|-
| [[Gamma 5/4]]
| [[36ed5/4]]
| [[36ed5/4]]
| [[Gamma 5/4]]
| 111.826213902194
| 36\36<5/4>, 19\36<5/4>, 17\36<5/4>
| 36\36<5/4>, 19\36<5/4>, 17\36<5/4>
| 0, -0.022, 0.022
| 0, -0.022, 0.022
| 111.826213902194
| 10.7309364962454
| 111.825976049766
| 10.7309593208108
|-
|-
| [[Alpha 11/9]]
| [[19ed11/9]]
| 65.6288971357202
| rowspan="3" | 11/9
| rowspan="3" | 11/9
| rowspan="3" | 10/9, 11/10
| rowspan="3" | 10/9, 11/10
| [[19ed11/9]]
| [[Alpha 11/9]]
| 19\19<11/9>, 10\19<11/9>, 9\19<11/9>
| 19\19<11/9>, 10\19<11/9>, 9\19<11/9>
| 0, 0.443, -0.443
| 0, 0.443, -0.443
| 65.6288971357202
| 18.2846284544201
| 65.6318281194766
| 18.2838119001578
|-
|-
| [[Beta 11/9]]
| [[21ed11/9]]
| [[21ed11/9]]
| [[Beta 11/9]]
| 72.5372020973750
| 21\21<11/9>, 11\21<11/9>, 10\21<11/9>
| 21\21<11/9>, 11\21<11/9>, 10\21<11/9>
| 0, -0.428, 0.428
| 0, -0.428, 0.428
| 72.5372020973750
| 16.5432352682849
| 72.5343665614942
| 16.5438819815521
|-
|-
| [[Gamma 11/9]]
| [[40ed11/9]]
| [[40ed11/9]]
| [[Gamma 11/9]]
| 138.166099233095
| 40\40<11/9>, 21\40<11/9>, 19\40<11/9>
| 40\40<11/9>, 21\40<11/9>, 19\40<11/9>
| 0, -0.015, 0.015
| 0, -0.015, 0.015
| 138.166099233095
| 8.68519851584955
| 138.165906595462
| 8.68521062517612
|-
|-
| [[Alpha 6/5]]
| [[21ed6/5]]
| 79.8374643554025
| rowspan="3" | 6/5
| rowspan="3" | 6/5
| rowspan="3" | 11/10, 12/11
| rowspan="3" | 11/10, 12/11
| [[21ed6/5]]
| [[Alpha 6/5]]
| 21\21<6/5>, 11\21<6/5>, 10\21<6/5>
| 21\21<6/5>, 11\21<6/5>, 10\21<6/5>
| 0, 0.332, -0.332
| 0, 0.332, -0.332
| 79.8374643554025
| 15.0305374762168
| 79.8401257721902
| 15.0300364433792
|-
|-
| [[Beta 6/5]]
| [[23ed6/5]]
| [[23ed6/5]]
| [[Beta 6/5]]
| 87.4410323892504
| 23\23<6/5>, 12\23<6/5>, 11\23<6/5>
| 23\23<6/5>, 12\23<6/5>, 11\23<6/5>
| 0, -0.322, 0.322
| 0, -0.322, 0.322
| 87.4410323892504
| 13.7235342174153
| 87.4384499734953
| 13.7239395296205
|-
|-
| [[Gamma 6/5]]
| [[44ed6/5]]
| [[44ed6/5]]
| [[Gamma 6/5]]
| 167.278496744653
| 44\44<6/5>, 23\44<6/5>, 21\44<6/5>
| 44\44<6/5>, 23\44<6/5>, 21\44<6/5>
| 0, -0.010, 0.010
| 0, -0.010, 0.010
| 167.278496744653
| 7.17366561364892
| 167.278337553932
| 7.17367244048030
|-
|-
| [[Alpha 13/11]]
| [[23ed13/11]]
| 95.4324773621886
| rowspan="3" | 13/11
| rowspan="3" | 13/11
| rowspan="3" | 12/11, 13/12
| rowspan="3" | 12/11, 13/12
| [[23ed13/11]]
| [[Alpha 13/11]]
| 23\23<13/11>, 12\23<13/11>, 11\23<13/11>
| 23\23<13/11>, 12\23<13/11>, 11\23<13/11>
| 0, 0.255, -0.255
| 0, 0.255, -0.255
| 95.4324773621886
| 12.5743356262850
| 95.4349145508238
| 12.5740145066190
|-
|-
| [[Beta 13/11]]
| [[25ed13/11]]
| [[25ed13/11]]
| [[Beta 13/11]]
| 103.730953654553
| 25\25<13/11>, 13\25<13/11>, 12\25<13/11>
| 25\25<13/11>, 13\25<13/11>, 12\25<13/11>
| 0, -0.248, 0.248
| 0, -0.248, 0.248
| 103.730953654553
| 11.5683887761822
| 103.728582924337
| 11.5686531732080
|-
|-
| [[Gamma 13/11]]
| [[48ed13/11]]
| [[48ed13/11]]
| [[Gamma 13/11]]
| 199.163431016741
| 48\48<13/11>, 25\48<13/11>, 23\48<13/11>
| 48\48<13/11>, 25\48<13/11>, 23\48<13/11>
| 0, -0.007, 0.007
| 0, -0.007, 0.007
| 199.163431016741
| 6.02520248759487
| 199.163297261208
| 6.02520653404413
|-
|-
| [[Alpha 7/6]]
| [[25ed7/6]]
| 112.413902640048
| rowspan="3" | 7/6
| rowspan="3" | 7/6
| rowspan="3" | 13/12, 14/13
| rowspan="3" | 13/12, 14/13
| [[25ed7/6]]
| [[Alpha 7/6]]
| 25\25<7/6>, 13\25<7/6>, 12\25<7/6>
| 25\25<7/6>, 13\25<7/6>, 12\25<7/6>
| 0, 0.200, -0.200
| 0, 0.200, -0.200
| 112.413902640048
| 10.6748362241495
| 112.416150402631
| 10.6746227806420
|-
|-
| [[Beta 7/6]]
| [[27ed7/6]]
| [[27ed7/6]]
| [[Beta 7/6]]
| 121.407014851252
| 27\27<7/6>, 14\27<7/6>, 13\27<7/6>
| 27\27<7/6>, 14\27<7/6>, 13\27<7/6>
| 0, -0.195, 0.195
| 0, -0.195, 0.195
| 121.407014851252
| 9.88410761495324
| 121.404823766036
| 9.88428600096291
|-
|-
| [[Gamma 7/6]]
| [[52ed7/6]]
| [[52ed7/6]]
| [[Gamma 7/6]]
| 233.820917491300
| 52\52<7/6>, 27\52<7/6>, 25\52<7/6>
| 52\52<7/6>, 27\52<7/6>, 25\52<7/6>
| 0, -0.005, 0.005
| 0, -0.005, 0.005
| 233.820917491300
| 5.13213280007188
| 233.820803527977
| 5.13213530145284
|-
|-
| [[Alpha 15/13]]
| [[27ed15/13]]
| 130.781715879411
| rowspan="3" | 15/13
| rowspan="3" | 15/13
| rowspan="3" | 14/13, 15/14
| rowspan="3" | 14/13, 15/14
| [[27ed15/13]]
| [[Alpha 15/13]]
| 27\27<15/13>, 14\27<15/13>, 13\27<15/13>
| 27\27<15/13>, 14\27<15/13>, 13\27<15/13>
| 0, 0.160, -0.160
| 0, 0.160, -0.160
| 130.781715879411
| 9.17559455410784
| 130.783801507845
| 9.17544822955784
|-
|-
| [[Beta 15/13]]
| [[29ed15/13]]
| [[29ed15/13]]
| [[Beta 15/13]]
| 140.469250388997
| 29\29<15/13>, 15\29<15/13>, 14\29<15/13>
| 29\29<15/13>, 15\29<15/13>, 14\29<15/13>
| 0, -0.156, 0.156
| 0, -0.156, 0.156
| 140.469250388997
| 8.54279492968661
| 140.467213664560
| 8.54291879716245
|-
|-
| [[Gamma 15/13]]
| [[56ed15/13]]
| [[56ed15/13]]
| [[Gamma 15/13]]
| 271.250966268408
| 56\56<15/13>, 29\56<15/13>, 27\56<15/13>
| 56\56<15/13>, 29\56<15/13>, 27\56<15/13>
| 0, -0.004, 0.004
| 0, -0.004, 0.004
| 271.250966268408
| 4.42394737430199
| 271.250868008139
| 4.42394897687108
|-
|-
| [[Alpha 8/7]]
| [[29ed8/7]]
| 150.535899020849
| rowspan="3" | 8/7
| rowspan="3" | 8/7
| rowspan="3" | 15/14, 16/15
| rowspan="3" | 15/14, 16/15
| [[29ed8/7]]
| [[Alpha 8/7]]
| 29\29<8/7>, 15\29<8/7>, 14\29<8/7>
| 29\29<8/7>, 15\29<8/7>, 14\29<8/7>
| 0, 0.130, -0.130
| 0, 0.130, -0.130
| 150.535899020849
| 7.97152046658190
| 150.537844310638
| 7.97141745648869
|-
|-
| [[Beta 8/7]]
| [[31ed8/7]]
| [[31ed8/7]]
| [[Beta 8/7]]
| 160.917685160217
| 31\31<8/7>, 16\31<8/7>, 15\31<8/7>
| 31\31<8/7>, 16\31<8/7>, 15\31<8/7>
| 0, -0.127, 0.127
| 0, -0.127, 0.127
| 160.917685160217
| 7.45722882357662
| 160.915782495277
| 7.45731699769858
|-
|-
| [[Gamma 8/7]]
| [[60ed8/7]]
| [[60ed8/7]]
| [[Gamma 8/7]]
| 311.453584181066
| 60\60<8/7>, 31\60<8/7>, 29\60<8/7>
| 60\60<8/7>, 31\60<8/7>, 29\60<8/7>
| 0, -0.003, 0.003
| 0, -0.003, 0.003
| 311.453584181066
| 3.85290155884792
| 311.453498588282
| 3.85290261769161
|}
|}
{{todo|Temperaments|inline=1|comment=Compute the temperaments associated to each Alpha-Beta-Gamma scales.}}


== Coincidence? ==


As a coincidence (?), all Alpha scales are (s1 + s2)ED(a / b), all Beta scales are (s2 + s3)ED(a / b), and all Gamma scales are (s1 + s2 + s2 + s3)ED(a / b).
== The converging Alpha-Beta-Gamma sequence ==
 
As a fact, for each <math>n\ge 2</math>, equal divisions of <math>R_n=\dfrac{n+1}{n-1}</math> where low errors appear for <math>S_n=\dfrac{n+1}{n}</math> and <math>B_n=\dfrac{n}{n-1}</math> forms a converging sequence and pattern, with the happy equal divisions of <math>R_n</math> being:
* '''Alpha:''' <math>k_\alpha=2n-1</math>
* '''Beta:''' <math>k_\beta=2n+1</math>
* '''Gamma:''' <math>k_\gamma=4n=k_\alpha+k_\beta</math>
 
In this sequence, the errors are lower and lower.
 
{{todo|Why this pattern|inline=1|comment=Explain why divisions of ratios where low errors appear for successive superparticular complementary pair make this pattern appears.}}


{| class="wikitable sortable right-1 left-2 right-3 left-4 right-5 left-6 right-7 left-8 right-9 left-10 right-11 left-12 right-13 left-14 right-15 left-16 right-17 left-18 right-19 left-20"
{| class="wikitable sortable right-1 left-2 right-3 left-4 right-5 left-6 right-7 left-8 right-9 left-10 right-11 left-12 right-13 left-14 right-15 left-16 right-17 left-18 right-19 left-20"
Retrieved from "https://en.xen.wiki/w/User:Contribution/Successive_superparticular_complementary_pair"