Best Known (56, 56+26, s)-Nets in Base 81
(56, 56+26, 40882)-Net over F81 — Constructive and digital
Digital (56, 82, 40882)-net over F81, using
- net defined by OOA [i] based on linear OOA(8182, 40882, F81, 26, 26) (dual of [(40882, 26), 1062850, 27]-NRT-code), using
- OA 13-folding and stacking [i] based on linear OA(8182, 531466, F81, 26) (dual of [531466, 531384, 27]-code), using
- discarding factors / shortening the dual code based on linear OA(8182, 531468, F81, 26) (dual of [531468, 531386, 27]-code), using
- construction X applied to Ce(25) ⊂ Ce(18) [i] based on
- linear OA(8176, 531441, F81, 26) (dual of [531441, 531365, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- linear OA(8155, 531441, F81, 19) (dual of [531441, 531386, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(816, 27, F81, 6) (dual of [27, 21, 7]-code or 27-arc in PG(5,81)), using
- discarding factors / shortening the dual code based on linear OA(816, 81, F81, 6) (dual of [81, 75, 7]-code or 81-arc in PG(5,81)), using
- Reed–Solomon code RS(75,81) [i]
- discarding factors / shortening the dual code based on linear OA(816, 81, F81, 6) (dual of [81, 75, 7]-code or 81-arc in PG(5,81)), using
- construction X applied to Ce(25) ⊂ Ce(18) [i] based on
- discarding factors / shortening the dual code based on linear OA(8182, 531468, F81, 26) (dual of [531468, 531386, 27]-code), using
- OA 13-folding and stacking [i] based on linear OA(8182, 531466, F81, 26) (dual of [531466, 531384, 27]-code), using
(56, 56+26, 338373)-Net over F81 — Digital
Digital (56, 82, 338373)-net over F81, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(8182, 338373, F81, 26) (dual of [338373, 338291, 27]-code), using
- discarding factors / shortening the dual code based on linear OA(8182, 531468, F81, 26) (dual of [531468, 531386, 27]-code), using
- construction X applied to Ce(25) ⊂ Ce(18) [i] based on
- linear OA(8176, 531441, F81, 26) (dual of [531441, 531365, 27]-code), using an extension Ce(25) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,25], and designed minimum distance d ≥ |I|+1 = 26 [i]
- linear OA(8155, 531441, F81, 19) (dual of [531441, 531386, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(816, 27, F81, 6) (dual of [27, 21, 7]-code or 27-arc in PG(5,81)), using
- discarding factors / shortening the dual code based on linear OA(816, 81, F81, 6) (dual of [81, 75, 7]-code or 81-arc in PG(5,81)), using
- Reed–Solomon code RS(75,81) [i]
- discarding factors / shortening the dual code based on linear OA(816, 81, F81, 6) (dual of [81, 75, 7]-code or 81-arc in PG(5,81)), using
- construction X applied to Ce(25) ⊂ Ce(18) [i] based on
- discarding factors / shortening the dual code based on linear OA(8182, 531468, F81, 26) (dual of [531468, 531386, 27]-code), using
(56, 56+26, large)-Net in Base 81 — Upper bound on s
There is no (56, 82, large)-net in base 81, because
- 24 times m-reduction [i] would yield (56, 58, large)-net in base 81, but