User:Lériendil/Third-superparticulars and semiparticulars by prime subgroup

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Some shorthand notation used here:

  • Sk stands for k^2/[(k-1)(k+1)] by standard convention (the kth square superparticular).
  • Gk stands for S(k-1)*Sk*S(k+1) (the kth third-particular).
  • Rk stands for S(k-1)/S(k+1) (the kth semiparticular).
  • Tk = Sk * S(k+1) stands for [k(k+1)/2]/[(k-1)(k+2)/2] (the kth triangle superparticular).
  • Lp refers to the p-limit, i.e. the subgroup of primes less than or equal to p.
  • Lp(-q) refers to the p limit with the prime q omitted: e.g. L17(-11) refers to the 2.3.5.7.13.17 subgroup; these omissions can be stacked so that L23(-5.17) refers to the group 2.3.7.11.13.19.23.

Note that not all members of Gk and Rk are superparticular. In particular, G(3k) is throdd-particular, and R(4k) is odd-particular. Such ratios will be excluded from consideration in this chart, though they will appear on companion no-twos and no-threes pages.

This list eventually aims to be complete to the 17-add-two-limit and the 29-add-one-limit, i.e. the union of the class of subgroups with at most one prime greater than 29, which is a superset of the 31-limit, and the class of subgroups with at most two primes greater than 17, which is a superset of the 23-limit.

2- and 3-prime subgroups (2.p, 2.3.p, and 2.5.p)

Note that the following lists are complete and the insertion of higher primes will add no new inclusions to them.

2-prime subgroups (2.p)

Third-particular Subgroup Comma
Ratio Smonzo
G4 = R3 2.5 5/4 [-2 1
G5 2.7 8/7 [3 -1

3-prime subgroups (2.3.p)

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
G7 = S4 L5 16/15 [4 -1 -1 R7 = S9 L5 81/80 [-4 4 -1
R5 = T7 2.3.7 28/27 [2 -3 1
G10 2.3.11 33/32 [-5 1 1 R10 2.3.11 243/242 [-1 5 -2

3-prime subgroups (2.5.p)

Superparticular Subgroup Comma
Ratio Smonzo
R6 2.5.7 50/49 [1 2 -2
G14 2.5.13 65/64 [-6 1 1

4-prime subgroups with threes

Note that the following lists are complete and the insertion of higher primes will add no new inclusions to them.

5-add-one-limit (L5.p)

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
G8 = T6 L7 21/20 [-2 1 -1 1
G26 = S15 L7 225/224 [-5 2 2 -1 R26 L7 4375/4374 [-1 -7 4 1
G11 L5.13 40/39 [3 -1 1 -1 R11 = T25 L5.13 325/324 [-2 -4 2 1
R14 = S26 L5.13 676/675 [2 -3 -2 2
G17 L5.19 96/95 [5 1 -1 -1 R17 L5.19 1216/1215 [6 -5 -1 1

2.3.13.p subgroups

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
G25 2.3.13.23 208/207 [4 -2 1 -1 R25 2.3.13.23 3888/3887 [4 5 -2 -1

4-prime no-threes subgroups and 5-prime subgroups

In the tables that follow, no-threes subgroups will be indicated in bold.

5-add-two-limit (L5.p.q)

7-add-one-limit (L7.p)

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
R9 = G23 L11(-3) 176/175 [4 -2 -1 1
G13 L11(-3) 56/55 [3 -1 1 -1 R13 L11 540/539 [2 3 1 -2 -1
G23 = R9 L11(-3) 176/175 [4 -2 -1 1 R23 = S55 L11 3025/3024 [-4 -3 2 -1 2
G34 L11 385/384 [-7 -1 1 1 1 R34 = S99 L11 9801/9800 [-3 4 -2 -2 2
G16 L7.17 85/84 [-2 -1 1 -1 1
G19 = T15 L7.17 120/119 [3 1 1 -1 -1 R19 L7.17 1701/1700 [-2 5 -2 1 -1
G22 2.5.7.23 161/160 [-5 -1 1 1 R22 L7.23 2646/2645 [1 3 -1 2 -2
G47 L7.23 736/735 [5 -1 -1 -2 1 R47 = S161 L7.23 25921/25920 [-6 -4 -1 2 2
G29 L7.31 280/279 [3 -2 1 1 -1 R29 L7.31 6076/6075 [2 -2 -5 2 1
G62 L7.61 1281/1280 [-8 1 -1 1 1 R62 = S244 L7.61 59536/59535 [4 -5 -1 -2 2
G82 L7.83 2241/2240 [-6 3 -1 -1 1 R82 L7.83 137781/137780 [-2 9 -1 1 -2

L5.11.p subgroups

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
G31 2.5.11.29 320/319 [6 1 -1 -1 R31 L5.11.29 7425/7424 [-8 3 2 1 -1
G46 L5.11.47 705/704 [-6 1 1 -1 1 R46 L5.11.47 24300/24299 [2 5 2 -1 -2
G98 L5.11.97 3201/3200 [-7 1 -2 1 1 R98 = S485 L5.11.97 235225/235224 [-3 -5 2 -2 2
G241 L5.11.239 19360/19359 [5 -4 1 2 -1 R241 L5.11.239 3499200/3499199 [6 7 2 -4 -1

L5.13.p subgroups

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
G28 L5.13.29 261/260 [-2 2 -1 -1 1
G38 L5.13.37 481/480 [-5 -1 -1 1 1 R38 L5.13.37 13690/13689 [1 -4 1 -2 2

L5.17.p subgroups

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
R18 2.5.17.19 1445/1444 [-2 1 2 -2
G49 2.5.17.47 800/799 [5 2 -1 -1 R49 L5.17.47 29376/29375 [6 3 -4 1 -1
G52 L5.17.53 901/900 [-2 -2 -2 1 1

Higher-prime subgroups

Third-particular Subgroup Comma Semiparticular Subgroup Comma
Ratio Smonzo Ratio Smonzo
G74 L5.19.73 1825/1824 [-3 -2 2 -1 1 R74 L5.19.73 101251/101250 [-1 -4 -4 1 2
G73 L5.37.71 1776/1775 [4 1 -2 1 -1 R73 L5.37.71 97200/97199 [4 5 2 -2 -1
G161 L5.53.163 8640/8639 [6 3 1 -1 -1 R161 L5.53.163 1043200/1043199 [8 -9 2 -1 1
G242 L5.61.241 19521/19520 [-6 4 -1 -1 1 R242 L5.61.241 3542941/3542940 [-2 -11 -1 1 2

No-fives subgroups

7-add-two-limit (2.3.7.p.q)

Higher primes

See also