Best Known (20, 20+4, s)-Nets in Base 25
(20, 20+4, large)-Net over F25 — Constructive and digital
Digital (20, 24, large)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (4, 6, large)-net over F25, using
- digital (14, 18, 4194327)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (0, 2, 26)-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
- (u, u+v)-construction [i] based on
(20, 20+4, large)-Net in Base 25 — Upper bound on s
There is no (20, 24, large)-net in base 25, because
- 2 times m-reduction [i] would yield (20, 22, large)-net in base 25, but