Best Known (19, 19+6, s)-Nets in Base 25
(19, 19+6, 130835)-Net over F25 — Constructive and digital
Digital (19, 25, 130835)-net over F25, using
- (u, u+v)-construction [i] based on
- digital (1, 4, 626)-net over F25, using
- net defined by OOA [i] based on linear OOA(254, 626, F25, 3, 3) (dual of [(626, 3), 1874, 4]-NRT-code), using
- appending kth column [i] based on linear OOA(254, 626, F25, 2, 3) (dual of [(626, 2), 1248, 4]-NRT-code), using
- net defined by OOA [i] based on linear OOA(254, 626, F25, 3, 3) (dual of [(626, 3), 1874, 4]-NRT-code), using
- digital (15, 21, 130209)-net over F25, using
- net defined by OOA [i] based on linear OOA(2521, 130209, F25, 6, 6) (dual of [(130209, 6), 781233, 7]-NRT-code), using
- OA 3-folding and stacking [i] based on linear OA(2521, 390627, F25, 6) (dual of [390627, 390606, 7]-code), using
- discarding factors / shortening the dual code based on linear OA(2521, 390629, F25, 6) (dual of [390629, 390608, 7]-code), using
- construction X applied to Ce(5) ⊂ Ce(4) [i] based on
- linear OA(2521, 390625, F25, 6) (dual of [390625, 390604, 7]-code), using an extension Ce(5) of the primitive narrow-sense BCH-code C(I) with length 390624 = 254−1, defining interval I = [1,5], and designed minimum distance d ≥ |I|+1 = 6 [i]
- linear OA(2517, 390625, F25, 5) (dual of [390625, 390608, 6]-code), using an extension Ce(4) of the primitive narrow-sense BCH-code C(I) with length 390624 = 254−1, defining interval I = [1,4], and designed minimum distance d ≥ |I|+1 = 5 [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(5) ⊂ Ce(4) [i] based on
- discarding factors / shortening the dual code based on linear OA(2521, 390629, F25, 6) (dual of [390629, 390608, 7]-code), using
- OA 3-folding and stacking [i] based on linear OA(2521, 390627, F25, 6) (dual of [390627, 390606, 7]-code), using
- net defined by OOA [i] based on linear OOA(2521, 130209, F25, 6, 6) (dual of [(130209, 6), 781233, 7]-NRT-code), using
- digital (1, 4, 626)-net over F25, using
(19, 19+6, 1060049)-Net over F25 — Digital
Digital (19, 25, 1060049)-net over F25, using
(19, 19+6, large)-Net in Base 25 — Upper bound on s
There is no (19, 25, large)-net in base 25, because
- 4 times m-reduction [i] would yield (19, 21, large)-net in base 25, but