Best Known (56, 68, s)-Nets in Base 25
(56, 68, 1398310)-Net over F25 — Constructive and digital
Digital (56, 68, 1398310)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (6, 12, 210)-net over F25, using
- net defined by OOA [i] based on linear OOA(2512, 210, F25, 6, 6) (dual of [(210, 6), 1248, 7]-NRT-code), using
- OA 3-folding and stacking [i] based on linear OA(2512, 630, F25, 6) (dual of [630, 618, 7]-code), using
- construction X applied to Ce(5) ⊂ Ce(3) [i] based on
- linear OA(2511, 625, F25, 6) (dual of [625, 614, 7]-code), using an extension Ce(5) of the primitive narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [1,5], and designed minimum distance d ≥ |I|+1 = 6 [i]
- linear OA(257, 625, F25, 4) (dual of [625, 618, 5]-code), using an extension Ce(3) of the primitive narrow-sense BCH-code C(I) with length 624 = 252−1, defining interval I = [1,3], and designed minimum distance d ≥ |I|+1 = 4 [i]
- linear OA(251, 5, F25, 1) (dual of [5, 4, 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
- construction X applied to Ce(5) ⊂ Ce(3) [i] based on
- OA 3-folding and stacking [i] based on linear OA(2512, 630, F25, 6) (dual of [630, 618, 7]-code), using
- net defined by OOA [i] based on linear OOA(2512, 210, F25, 6, 6) (dual of [(210, 6), 1248, 7]-NRT-code), using
- digital (44, 56, 1398100)-net over F25, using
- net defined by OOA [i] based on linear OOA(2556, 1398100, F25, 12, 12) (dual of [(1398100, 12), 16777144, 13]-NRT-code), using
- OA 6-folding and stacking [i] based on linear OA(2556, 8388600, F25, 12) (dual of [8388600, 8388544, 13]-code), using
- discarding factors / shortening the dual code based on linear OA(2556, large, F25, 12) (dual of [large, large−56, 13]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 9765624 = 255−1, defining interval I = [0,11], and designed minimum distance d ≥ |I|+1 = 13 [i]
- discarding factors / shortening the dual code based on linear OA(2556, large, F25, 12) (dual of [large, large−56, 13]-code), using
- OA 6-folding and stacking [i] based on linear OA(2556, 8388600, F25, 12) (dual of [8388600, 8388544, 13]-code), using
- net defined by OOA [i] based on linear OOA(2556, 1398100, F25, 12, 12) (dual of [(1398100, 12), 16777144, 13]-NRT-code), using
- digital (6, 12, 210)-net over F25, using
(56, 68, large)-Net over F25 — Digital
Digital (56, 68, large)-net over F25, using
- 251 times duplication [i] based on digital (55, 67, large)-net over F25, using
- t-expansion [i] based on digital (53, 67, large)-net over F25, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(2567, large, F25, 14) (dual of [large, large−67, 15]-code), using
- 1 times code embedding in larger space [i] based on linear OA(2566, large, F25, 14) (dual of [large, large−66, 15]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 9765624 = 255−1, defining interval I = [0,13], and designed minimum distance d ≥ |I|+1 = 15 [i]
- 1 times code embedding in larger space [i] based on linear OA(2566, large, F25, 14) (dual of [large, large−66, 15]-code), using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(2567, large, F25, 14) (dual of [large, large−67, 15]-code), using
- t-expansion [i] based on digital (53, 67, large)-net over F25, using
(56, 68, large)-Net in Base 25 — Upper bound on s
There is no (56, 68, large)-net in base 25, because
- 10 times m-reduction [i] would yield (56, 58, large)-net in base 25, but