Best Known (54, 54+19, s)-Nets in Base 25
(54, 54+19, 43403)-Net over F25 — Constructive and digital
Digital (54, 73, 43403)-net over F25, using
- net defined by OOA [i] based on linear OOA(2573, 43403, F25, 19, 19) (dual of [(43403, 19), 824584, 20]-NRT-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(2573, 390628, F25, 19) (dual of [390628, 390555, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(2573, 390629, F25, 19) (dual of [390629, 390556, 20]-code), using
- construction X applied to Ce(18) ⊂ Ce(17) [i] based on
- linear OA(2573, 390625, F25, 19) (dual of [390625, 390552, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 390624 = 254−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(2569, 390625, F25, 18) (dual of [390625, 390556, 19]-code), using an extension Ce(17) of the primitive narrow-sense BCH-code C(I) with length 390624 = 254−1, defining interval I = [1,17], and designed minimum distance d ≥ |I|+1 = 18 [i]
- linear OA(250, 4, F25, 0) (dual of [4, 4, 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
- construction X applied to Ce(18) ⊂ Ce(17) [i] based on
- discarding factors / shortening the dual code based on linear OA(2573, 390629, F25, 19) (dual of [390629, 390556, 20]-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(2573, 390628, F25, 19) (dual of [390628, 390555, 20]-code), using
(54, 54+19, 249119)-Net over F25 — Digital
Digital (54, 73, 249119)-net over F25, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(2573, 249119, F25, 19) (dual of [249119, 249046, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(2573, 390625, F25, 19) (dual of [390625, 390552, 20]-code), using
- an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 390624 = 254−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- discarding factors / shortening the dual code based on linear OA(2573, 390625, F25, 19) (dual of [390625, 390552, 20]-code), using
(54, 54+19, large)-Net in Base 25 — Upper bound on s
There is no (54, 73, large)-net in base 25, because
- 17 times m-reduction [i] would yield (54, 56, large)-net in base 25, but