User:Contribution/Successive superparticular complementary pair: Difference between revisions
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== Context == | |||
Read this first: [[Equal-step_tuning#Alpha-beta-gamma_family_of_equal_divisions]] | |||
== The Alpha-Beta-Gamma family == | |||
{| class="wikitable" | {| class="wikitable" | ||
|+ | |+ | ||
|- | |- | ||
! colspan="3" | Tuning !! colspan="2" | Intervals !! colspan="2" | | ! colspan="3" | Tuning !! colspan="2" | Intervals !! colspan="2" | Mappings | ||
|- | |- | ||
! Name | ! Name | ||
| Line 25: | Line 15: | ||
! Equave | ! Equave | ||
! SSC pair | ! SSC pair | ||
! | ! Steps (Equave, SSC pair) | ||
! Errors (cent) | ! Errors (cent) | ||
|- | |- | ||
| [[Alpha 3/1]] | | [[Alpha 3/1]] | ||
| Line 37: | Line 25: | ||
| 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 | ||
|- | |- | ||
| [[Beta 3/1]] | | [[Beta 3/1]] | ||
| Line 45: | Line 31: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 3/1]] | | [[Gamma 3/1]] | ||
| Line 53: | Line 37: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 2/1]] | | [[Alpha 2/1]] | ||
| [[5edo|5ed2/1]] | | [[5edo|5ed2/1]] | ||
| 5 | | 5 | ||
| rowspan="3" | 2/1 | | rowspan="3" | 2/1 | ||
| rowspan="3" | 3/2, 4/3 | | rowspan="3" | 3/2, 4/3 | ||
| 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 | ||
|- | |- | ||
| [[Beta 2/1]] | | [[Beta 2/1]] | ||
| [[7edo|7ed2/1]] | | [[7edo|7ed2/1]] | ||
| 7 | | 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 | ||
|- | |- | ||
| [[Gamma 2/1]] | | [[Gamma 2/1]] | ||
| [[12edo|12ed2/1]] | | [[12edo|12ed2/1]] | ||
| 12 | | 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 | ||
|- | |- | ||
| [[Alpha 5/3]] | | [[Alpha 5/3]] | ||
| Line 89: | Line 65: | ||
| 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 | ||
|- | |- | ||
| [[Beta 5/3]] | | [[Beta 5/3]] | ||
| Line 97: | Line 71: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 5/3]] | | [[Gamma 5/3]] | ||
| Line 105: | Line 77: | ||
| 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 | ||
|- | |- | ||
| [[Carlos Alpha|Alpha 3/2]] | | [[Carlos Alpha|Alpha 3/2]] | ||
| Line 115: | Line 85: | ||
| 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 | ||
|- | |- | ||
| [[Carlos Beta|Beta 3/2]] | | [[Carlos Beta|Beta 3/2]] | ||
| Line 123: | Line 91: | ||
| 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 | ||
|- | |- | ||
| [[Carlos Gamma|Gamma 3/2]] | | [[Carlos Gamma|Gamma 3/2]] | ||
| Line 131: | Line 97: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 7/5]] | | [[Alpha 7/5]] | ||
| Line 141: | Line 105: | ||
| 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 | ||
|- | |- | ||
| [[Beta 7/5]] | | [[Beta 7/5]] | ||
| Line 149: | Line 111: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 7/5]] | | [[Gamma 7/5]] | ||
| Line 157: | Line 117: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 4/3]] | | [[Alpha 4/3]] | ||
| Line 167: | Line 125: | ||
| 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 | ||
|- | |- | ||
| [[Beta 4/3]] | | [[Beta 4/3]] | ||
| Line 175: | Line 131: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 4/3]] | | [[Gamma 4/3]] | ||
| Line 183: | Line 137: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 9/7]] | | [[Alpha 9/7]] | ||
| Line 193: | Line 145: | ||
| 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 | ||
|- | |- | ||
| [[Beta 9/7]] | | [[Beta 9/7]] | ||
| Line 201: | Line 151: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 9/7]] | | [[Gamma 9/7]] | ||
| Line 209: | Line 157: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 5/4]] | | [[Alpha 5/4]] | ||
| Line 219: | Line 165: | ||
| 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 | ||
|- | |- | ||
| [[Beta 5/4]] | | [[Beta 5/4]] | ||
| Line 227: | Line 171: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 5/4]] | | [[Gamma 5/4]] | ||
| Line 235: | Line 177: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 11/9]] | | [[Alpha 11/9]] | ||
| Line 245: | Line 185: | ||
| 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 | ||
|- | |- | ||
| [[Beta 11/9]] | | [[Beta 11/9]] | ||
| Line 253: | Line 191: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 11/9]] | | [[Gamma 11/9]] | ||
| Line 261: | Line 197: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 6/5]] | | [[Alpha 6/5]] | ||
| Line 271: | Line 205: | ||
| 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 | ||
|- | |- | ||
| [[Beta 6/5]] | | [[Beta 6/5]] | ||
| Line 279: | Line 211: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 6/5]] | | [[Gamma 6/5]] | ||
| Line 287: | Line 217: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 13/11]] | | [[Alpha 13/11]] | ||
| Line 297: | Line 225: | ||
| 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 | ||
|- | |- | ||
| [[Beta 13/11]] | | [[Beta 13/11]] | ||
| Line 305: | Line 231: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 13/11]] | | [[Gamma 13/11]] | ||
| Line 313: | Line 237: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 7/6]] | | [[Alpha 7/6]] | ||
| Line 323: | Line 245: | ||
| 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 | ||
|- | |- | ||
| [[Beta 7/6]] | | [[Beta 7/6]] | ||
| Line 331: | Line 251: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 7/6]] | | [[Gamma 7/6]] | ||
| Line 339: | Line 257: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 15/13]] | | [[Alpha 15/13]] | ||
| Line 349: | Line 265: | ||
| 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 | ||
|- | |- | ||
| [[Beta 15/13]] | | [[Beta 15/13]] | ||
| Line 357: | Line 271: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 15/13]] | | [[Gamma 15/13]] | ||
| Line 365: | Line 277: | ||
| 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 | ||
|- | |- | ||
| [[Alpha 8/7]] | | [[Alpha 8/7]] | ||
| Line 375: | Line 285: | ||
| 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 | ||
|- | |- | ||
| [[Beta 8/7]] | | [[Beta 8/7]] | ||
| Line 383: | Line 291: | ||
| 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 | ||
|- | |- | ||
| [[Gamma 8/7]] | | [[Gamma 8/7]] | ||
| Line 391: | Line 297: | ||
| 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 | ||
|} | |} | ||
As a | == 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" | ||
Latest revision as of 00:21, 28 October 2025
Context
Read this first: Equal-step_tuning#Alpha-beta-gamma_family_of_equal_divisions
The Alpha-Beta-Gamma family
| Tuning | Intervals | Mappings | ||||
|---|---|---|---|---|---|---|
| Name | Equal division | Steps per octave | Equave | SSC pair | Steps (Equave, SSC pair) | Errors (cent) |
| Alpha 3/1 | 3ed3/1 | 1.89278926071437 | 3/1 | 2/1, 3/2 | 3\3<3/1>, 2\3<3/1>, 1\3<3/1> | 0, 67.970, -67.970 |
| Beta 3/1 | 5ed3/1 | 3.15464876785729 | 5\5<3/1>, 3\5<3/1>, 2\5<3/1> | 0, -58.827, 58.827 | ||
| Gamma 3/1 | 8ed3/1 | 5.04743802857166 | 8\8<3/1>, 5\8<3/1>, 3\8<3/1> | 0, -11.278, 11.278 | ||
| Alpha 2/1 | 5ed2/1 | 5 | 2/1 | 3/2, 4/3 | 5\5<2/1>, 3\5<2/1>, 2\5<2/1> | 0, 18.045, -18.045 |
| Beta 2/1 | 7ed2/1 | 7 | 7\7<2/1>, 4\7<2/1>, 3\7<2/1> | 0, -16.241, 16.241 | ||
| Gamma 2/1 | 12ed2/1 | 12 | 12\12<2/1>, 7\12<2/1>, 5\12<2/1> | 0, -1.955, 1.955 | ||
| Alpha 5/3 | 7ed5/3 | 9.49840814199707 | 5/3 | 4/3, 5/4 | 7\7<5/3>, 4\7<5/3>, 3\7<5/3> | 0, 7.303, -7.303 |
| Beta 5/3 | 9ed5/3 | 12.2122390397105 | 9\9<5/3>, 5\9<5/3>, 4\9<5/3> | 0, -6.735, 6.735 | ||
| Gamma 5/3 | 16ed5/3 | 21.7106471817076 | 16\16<5/3>, 9\16<5/3>, 7\16<5/3> | 0, -0.593, 0.593 | ||
| Alpha 3/2 | 9ed3/2 | 15.3856016221631 | 3/2 | 5/4, 6/5 | 9\9<3/2>, 5\9<3/2>, 4\9<3/2> | 0, 3.661, -3.661 |
| Beta 3/2 | 11ed3/2 | 18.8046242048660 | 11\11<3/2>, 6\11<3/2>, 5\11<3/2> | 0, -3.429, 3.429 | ||
| Gamma 3/2 | 20ed3/2 | 34.1902258270291 | 20\20<3/2>, 11\20<3/2>, 9\20<3/2> | 0, -0.238, 0.238 | ||
| Alpha 7/5 | 11ed7/5 | 22.6604698881676 | 7/5 | 6/5, 7/6 | 11\11<7/5>, 6\11<7/5>, 5\11<7/5> | 0, 2.093, -2.093 |
| Beta 7/5 | 13ed7/5 | 26.7805553223799 | 13\13<7/5>, 7\13<7/5>, 6\13<7/5> | 0, -1.981, 1.981 | ||
| Gamma 7/5 | 24ed7/5 | 49.4410252105475 | 24\24<7/5>, 13\24<7/5>, 11\24<7/5> | 0, -0.114, 0.114 | ||
| Alpha 4/3 | 13ed4/3 | 31.3224709154917 | 4/3 | 7/6, 8/7 | 13\13<4/3>, 7\13<4/3>, 6\13<4/3> | 0, 1.307, -1.307 |
| Beta 4/3 | 15ed4/3 | 36.1413125947981 | 15\15<4/3>, 8\15<4/3>, 7\15<4/3> | 0, -1.247, 1.247 | ||
| Gamma 4/3 | 28ed4/3 | 67.4637835102899 | 28\28<4/3>, 15\28<4/3>, 13\28<4/3> | 0, -0.061, 0.061 | ||
| Alpha 9/7 | 15ed9/7 | 41.3713123417559 | 9/7 | 8/7, 9/8 | 15\15<9/7>, 8\15<9/7>, 7\15<9/7> | 0, 0.871, -0.871 |
| Beta 9/7 | 17ed9/7 | 46.8874873206567 | 17\17<9/7>, 9\17<9/7>, 8\17<9/7> | 0, -0.835, 0.835 | ||
| Gamma 9/7 | 32ed9/7 | 88.2587996624126 | 32\32<9/7>, 17\32<9/7>, 15\32<9/7> | 0, -0.036, 0.036 | ||
| Alpha 5/4 | 17ed5/4 | 52.8068232315916 | 5/4 | 9/8, 10/9 | 17\17<5/4>, 9\17<5/4>, 8\17<5/4> | 0, 0.609, -0.609 |
| Beta 5/4 | 19ed5/4 | 59.0193906706024 | 19\19<5/4>, 10\19<5/4>, 9\19<5/4> | 0, -0.587, 0.587 | ||
| Gamma 5/4 | 36ed5/4 | 111.826213902194 | 36\36<5/4>, 19\36<5/4>, 17\36<5/4> | 0, -0.022, 0.022 | ||
| Alpha 11/9 | 19ed11/9 | 65.6288971357202 | 11/9 | 10/9, 11/10 | 19\19<11/9>, 10\19<11/9>, 9\19<11/9> | 0, 0.443, -0.443 |
| Beta 11/9 | 21ed11/9 | 72.5372020973750 | 21\21<11/9>, 11\21<11/9>, 10\21<11/9> | 0, -0.428, 0.428 | ||
| Gamma 11/9 | 40ed11/9 | 138.166099233095 | 40\40<11/9>, 21\40<11/9>, 19\40<11/9> | 0, -0.015, 0.015 | ||
| Alpha 6/5 | 21ed6/5 | 79.8374643554025 | 6/5 | 11/10, 12/11 | 21\21<6/5>, 11\21<6/5>, 10\21<6/5> | 0, 0.332, -0.332 |
| Beta 6/5 | 23ed6/5 | 87.4410323892504 | 23\23<6/5>, 12\23<6/5>, 11\23<6/5> | 0, -0.322, 0.322 | ||
| Gamma 6/5 | 44ed6/5 | 167.278496744653 | 44\44<6/5>, 23\44<6/5>, 21\44<6/5> | 0, -0.010, 0.010 | ||
| Alpha 13/11 | 23ed13/11 | 95.4324773621886 | 13/11 | 12/11, 13/12 | 23\23<13/11>, 12\23<13/11>, 11\23<13/11> | 0, 0.255, -0.255 |
| Beta 13/11 | 25ed13/11 | 103.730953654553 | 25\25<13/11>, 13\25<13/11>, 12\25<13/11> | 0, -0.248, 0.248 | ||
| Gamma 13/11 | 48ed13/11 | 199.163431016741 | 48\48<13/11>, 25\48<13/11>, 23\48<13/11> | 0, -0.007, 0.007 | ||
| Alpha 7/6 | 25ed7/6 | 112.413902640048 | 7/6 | 13/12, 14/13 | 25\25<7/6>, 13\25<7/6>, 12\25<7/6> | 0, 0.200, -0.200 |
| Beta 7/6 | 27ed7/6 | 121.407014851252 | 27\27<7/6>, 14\27<7/6>, 13\27<7/6> | 0, -0.195, 0.195 | ||
| Gamma 7/6 | 52ed7/6 | 233.820917491300 | 52\52<7/6>, 27\52<7/6>, 25\52<7/6> | 0, -0.005, 0.005 | ||
| Alpha 15/13 | 27ed15/13 | 130.781715879411 | 15/13 | 14/13, 15/14 | 27\27<15/13>, 14\27<15/13>, 13\27<15/13> | 0, 0.160, -0.160 |
| Beta 15/13 | 29ed15/13 | 140.469250388997 | 29\29<15/13>, 15\29<15/13>, 14\29<15/13> | 0, -0.156, 0.156 | ||
| Gamma 15/13 | 56ed15/13 | 271.250966268408 | 56\56<15/13>, 29\56<15/13>, 27\56<15/13> | 0, -0.004, 0.004 | ||
| Alpha 8/7 | 29ed8/7 | 150.535899020849 | 8/7 | 15/14, 16/15 | 29\29<8/7>, 15\29<8/7>, 14\29<8/7> | 0, 0.130, -0.130 |
| Beta 8/7 | 31ed8/7 | 160.917685160217 | 31\31<8/7>, 16\31<8/7>, 15\31<8/7> | 0, -0.127, 0.127 | ||
| Gamma 8/7 | 60ed8/7 | 311.453584181066 | 60\60<8/7>, 31\60<8/7>, 29\60<8/7> | 0, -0.003, 0.003 | ||
The converging Alpha-Beta-Gamma sequence
As a fact, for each [math]\displaystyle{ n\ge 2 }[/math], equal divisions of [math]\displaystyle{ R_n=\dfrac{n+1}{n-1} }[/math] where low errors appear for [math]\displaystyle{ S_n=\dfrac{n+1}{n} }[/math] and [math]\displaystyle{ B_n=\dfrac{n}{n-1} }[/math] forms a converging sequence and pattern, with the happy equal divisions of [math]\displaystyle{ R_n }[/math] being:
- Alpha: [math]\displaystyle{ k_\alpha=2n-1 }[/math]
- Beta: [math]\displaystyle{ k_\beta=2n+1 }[/math]
- Gamma: [math]\displaystyle{ k_\gamma=4n=k_\alpha+k_\beta }[/math]
In this sequence, the errors are lower and lower.
| Todo: Why this pattern
Explain why divisions of ratios where low errors appear for successive superparticular complementary pair make this pattern appears. |