Best Known (74−39, 74, s)-Nets in Base 27
(74−39, 74, 170)-Net over F27 — Constructive and digital
Digital (35, 74, 170)-net over F27, using
- (u, u+v)-construction [i] based on
- digital (7, 26, 82)-net over F27, using
- net from sequence [i] based on digital (7, 81)-sequence over F27, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F27 with g(F) = 7 and N(F) ≥ 82, using
- net from sequence [i] based on digital (7, 81)-sequence over F27, using
- digital (9, 48, 88)-net over F27, using
- net from sequence [i] based on digital (9, 87)-sequence over F27, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F27 with g(F) = 9 and N(F) ≥ 88, using
- net from sequence [i] based on digital (9, 87)-sequence over F27, using
- digital (7, 26, 82)-net over F27, using
(74−39, 74, 366)-Net over F27 — Digital
Digital (35, 74, 366)-net over F27, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OOA(2774, 366, F27, 2, 39) (dual of [(366, 2), 658, 40]-NRT-code), using
- OOA 2-folding [i] based on linear OA(2774, 732, F27, 39) (dual of [732, 658, 40]-code), using
- construction XX applied to C1 = C([727,36]), C2 = C([0,37]), C3 = C1 + C2 = C([0,36]), and C∩ = C1 ∩ C2 = C([727,37]) [i] based on
- linear OA(2772, 728, F27, 38) (dual of [728, 656, 39]-code), using the primitive BCH-code C(I) with length 728 = 272−1, defining interval I = {−1,0,…,36}, and designed minimum distance d ≥ |I|+1 = 39 [i]
- linear OA(2772, 728, F27, 38) (dual of [728, 656, 39]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 728 = 272−1, defining interval I = [0,37], and designed minimum distance d ≥ |I|+1 = 39 [i]
- linear OA(2774, 728, F27, 39) (dual of [728, 654, 40]-code), using the primitive BCH-code C(I) with length 728 = 272−1, defining interval I = {−1,0,…,37}, and designed minimum distance d ≥ |I|+1 = 40 [i]
- linear OA(2770, 728, F27, 37) (dual of [728, 658, 38]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 728 = 272−1, defining interval I = [0,36], and designed minimum distance d ≥ |I|+1 = 38 [i]
- linear OA(270, 2, F27, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(270, s, F27, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(270, 2, F27, 0) (dual of [2, 2, 1]-code) (see above)
- construction XX applied to C1 = C([727,36]), C2 = C([0,37]), C3 = C1 + C2 = C([0,36]), and C∩ = C1 ∩ C2 = C([727,37]) [i] based on
- OOA 2-folding [i] based on linear OA(2774, 732, F27, 39) (dual of [732, 658, 40]-code), using
(74−39, 74, 370)-Net in Base 27 — Constructive
(35, 74, 370)-net in base 27, using
- 2 times m-reduction [i] based on (35, 76, 370)-net in base 27, using
- base change [i] based on digital (16, 57, 370)-net over F81, using
- net from sequence [i] based on digital (16, 369)-sequence over F81, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F81 with g(F) = 16 and N(F) ≥ 370, using
- net from sequence [i] based on digital (16, 369)-sequence over F81, using
- base change [i] based on digital (16, 57, 370)-net over F81, using
(74−39, 74, 96304)-Net in Base 27 — Upper bound on s
There is no (35, 74, 96305)-net in base 27, because
- 1 times m-reduction [i] would yield (35, 73, 96305)-net in base 27, but
- the generalized Rao bound for nets shows that 27m ≥ 308 717007 234878 083171 950408 262463 203762 951035 232660 392900 375475 716993 971076 083911 240493 767885 170630 575843 > 2773 [i]