Best Known (22, 22+18, s)-Nets in Base 25
(22, 22+18, 178)-Net over F25 — Constructive and digital
Digital (22, 40, 178)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (3, 12, 52)-net over F25, using
- net from sequence [i] based on digital (3, 51)-sequence over F25, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 3 and N(F) ≥ 52, using
- net from sequence [i] based on digital (3, 51)-sequence over F25, using
- digital (10, 28, 126)-net over F25, using
- net from sequence [i] based on digital (10, 125)-sequence over F25, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 10 and N(F) ≥ 126, using
- the Hermitian function field over F25 [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F25 with g(F) = 10 and N(F) ≥ 126, using
- net from sequence [i] based on digital (10, 125)-sequence over F25, using
- digital (3, 12, 52)-net over F25, using
(22, 22+18, 674)-Net over F25 — Digital
Digital (22, 40, 674)-net over F25, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(2540, 674, F25, 18) (dual of [674, 634, 19]-code), using
- 41 step Varšamov–Edel lengthening with (ri) = (3, 0, 0, 1, 9 times 0, 1, 27 times 0) [i] based on linear OA(2535, 628, F25, 18) (dual of [628, 593, 19]-code), using
- construction XX applied to C1 = C([623,15]), C2 = C([0,16]), C3 = C1 + C2 = C([0,15]), and C∩ = C1 ∩ C2 = C([623,16]) [i] based on
- linear OA(2533, 624, F25, 17) (dual of [624, 591, 18]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,…,15}, and designed minimum distance d ≥ |I|+1 = 18 [i]
- linear OA(2533, 624, F25, 17) (dual of [624, 591, 18]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,16], and designed minimum distance d ≥ |I|+1 = 18 [i]
- linear OA(2535, 624, F25, 18) (dual of [624, 589, 19]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,…,16}, and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(2531, 624, F25, 16) (dual of [624, 593, 17]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,15], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(250, s, F25, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code) (see above)
- construction XX applied to C1 = C([623,15]), C2 = C([0,16]), C3 = C1 + C2 = C([0,15]), and C∩ = C1 ∩ C2 = C([623,16]) [i] based on
- 41 step Varšamov–Edel lengthening with (ri) = (3, 0, 0, 1, 9 times 0, 1, 27 times 0) [i] based on linear OA(2535, 628, F25, 18) (dual of [628, 593, 19]-code), using
(22, 22+18, 282228)-Net in Base 25 — Upper bound on s
There is no (22, 40, 282229)-net in base 25, because
- the generalized Rao bound for nets shows that 25m ≥ 82 720559 801749 404104 759027 450492 112028 661731 613416 260025 > 2540 [i]