Best Known (19−4, 19, s)-Nets in Base 25
(19−4, 19, 4194952)-Net over F25 — Constructive and digital
Digital (15, 19, 4194952)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (1, 3, 651)-net over F25, using
- digital (12, 16, 4194301)-net over F25, using
- net defined by OOA [i] based on linear OOA(2516, 4194301, F25, 4, 4) (dual of [(4194301, 4), 16777188, 5]-NRT-code), using
- OA 2-folding and stacking [i] based on linear OA(2516, 8388602, F25, 4) (dual of [8388602, 8388586, 5]-code), using
- discarding factors / shortening the dual code based on linear OA(2516, large, F25, 4) (dual of [large, large−16, 5]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 9765624 = 255−1, defining interval I = [0,3], and designed minimum distance d ≥ |I|+1 = 5 [i]
- discarding factors / shortening the dual code based on linear OA(2516, large, F25, 4) (dual of [large, large−16, 5]-code), using
- OA 2-folding and stacking [i] based on linear OA(2516, 8388602, F25, 4) (dual of [8388602, 8388586, 5]-code), using
- net defined by OOA [i] based on linear OOA(2516, 4194301, F25, 4, 4) (dual of [(4194301, 4), 16777188, 5]-NRT-code), using
(19−4, 19, large)-Net over F25 — Digital
Digital (15, 19, large)-net over F25, using
- 253 times duplication [i] based on digital (12, 16, large)-net over F25, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(2516, large, F25, 4) (dual of [large, large−16, 5]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 9765624 = 255−1, defining interval I = [0,3], and designed minimum distance d ≥ |I|+1 = 5 [i]
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(2516, large, F25, 4) (dual of [large, large−16, 5]-code), using
(19−4, 19, large)-Net in Base 25 — Upper bound on s
There is no (15, 19, large)-net in base 25, because
- 2 times m-reduction [i] would yield (15, 17, large)-net in base 25, but