Best Known (40, 40+8, s)-Nets in Base 25
(40, 40+8, 2105000)-Net over F25 — Constructive and digital
Digital (40, 48, 2105000)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (8, 12, 7850)-net over F25, using
- net defined by OOA [i] based on linear OOA(2512, 7850, F25, 4, 4) (dual of [(7850, 4), 31388, 5]-NRT-code), using
- OA 2-folding and stacking [i] based on linear OA(2512, 15700, F25, 4) (dual of [15700, 15688, 5]-code), using
- generalized (u, u+v)-construction [i] based on
- linear OA(250, 628, F25, 0) (dual of [628, 628, 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, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code) (see above)
- linear OA(251, 628, F25, 1) (dual of [628, 627, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(251, s, F25, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- linear OA(251, 628, F25, 1) (dual of [628, 627, 2]-code) (see above)
- linear OA(253, 628, F25, 2) (dual of [628, 625, 3]-code), using
- discarding factors / shortening the dual code based on linear OA(253, 651, F25, 2) (dual of [651, 648, 3]-code), using
- Hamming code H(3,25) [i]
- discarding factors / shortening the dual code based on linear OA(253, 651, F25, 2) (dual of [651, 648, 3]-code), using
- linear OA(257, 628, F25, 4) (dual of [628, 621, 5]-code), using
- construction XX applied to C1 = C([623,1]), C2 = C([0,2]), C3 = C1 + C2 = C([0,1]), and C∩ = C1 ∩ C2 = C([623,2]) [i] based on
- linear OA(255, 624, F25, 3) (dual of [624, 619, 4]-code or 624-cap in PG(4,25)), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,1}, and designed minimum distance d ≥ |I|+1 = 4 [i]
- linear OA(255, 624, F25, 3) (dual of [624, 619, 4]-code or 624-cap in PG(4,25)), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,2], and designed minimum distance d ≥ |I|+1 = 4 [i]
- linear OA(257, 624, F25, 4) (dual of [624, 617, 5]-code), using the primitive BCH-code C(I) with length 624 = 252−1, defining interval I = {−1,0,1,2}, and designed minimum distance d ≥ |I|+1 = 5 [i]
- linear OA(253, 624, F25, 2) (dual of [624, 621, 3]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [0,1], and designed minimum distance d ≥ |I|+1 = 3 [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 (see above)
- linear OA(250, 2, F25, 0) (dual of [2, 2, 1]-code) (see above)
- construction XX applied to C1 = C([623,1]), C2 = C([0,2]), C3 = C1 + C2 = C([0,1]), and C∩ = C1 ∩ C2 = C([623,2]) [i] based on
- linear OA(250, 628, F25, 0) (dual of [628, 628, 1]-code), using
- generalized (u, u+v)-construction [i] based on
- OA 2-folding and stacking [i] based on linear OA(2512, 15700, F25, 4) (dual of [15700, 15688, 5]-code), using
- net defined by OOA [i] based on linear OOA(2512, 7850, F25, 4, 4) (dual of [(7850, 4), 31388, 5]-NRT-code), using
- digital (28, 36, 2097150)-net over F25, using
- net defined by OOA [i] based on linear OOA(2536, 2097150, F25, 8, 8) (dual of [(2097150, 8), 16777164, 9]-NRT-code), using
- OA 4-folding and stacking [i] based on linear OA(2536, 8388600, F25, 8) (dual of [8388600, 8388564, 9]-code), using
- discarding factors / shortening the dual code based on linear OA(2536, large, F25, 8) (dual of [large, large−36, 9]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 9765624 = 255−1, defining interval I = [0,7], and designed minimum distance d ≥ |I|+1 = 9 [i]
- discarding factors / shortening the dual code based on linear OA(2536, large, F25, 8) (dual of [large, large−36, 9]-code), using
- OA 4-folding and stacking [i] based on linear OA(2536, 8388600, F25, 8) (dual of [8388600, 8388564, 9]-code), using
- net defined by OOA [i] based on linear OOA(2536, 2097150, F25, 8, 8) (dual of [(2097150, 8), 16777164, 9]-NRT-code), using
- digital (8, 12, 7850)-net over F25, using
(40, 40+8, large)-Net over F25 — Digital
Digital (40, 48, large)-net over F25, using
- 3 times m-reduction [i] based on digital (40, 51, large)-net over F25, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(2551, large, F25, 11) (dual of [large, large−51, 12]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 9765626 | 2510−1, defining interval I = [0,5], and minimum distance d ≥ |{−5,−4,…,5}|+1 = 12 (BCH-bound) [i]
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(2551, large, F25, 11) (dual of [large, large−51, 12]-code), using
(40, 40+8, large)-Net in Base 25 — Upper bound on s
There is no (40, 48, large)-net in base 25, because
- 6 times m-reduction [i] would yield (40, 42, large)-net in base 25, but