Best Known (80−19, 80, s)-Nets in Base 81
(80−19, 80, 932067)-Net over F81 — Constructive and digital
Digital (61, 80, 932067)-net over F81, using
- 814 times duplication [i] based on digital (57, 76, 932067)-net over F81, using
- net defined by OOA [i] based on linear OOA(8176, 932067, F81, 21, 19) (dual of [(932067, 21), 19573331, 20]-NRT-code), using
- OOA 3-folding and stacking with additional row [i] based on linear OOA(8176, 2796202, F81, 3, 19) (dual of [(2796202, 3), 8388530, 20]-NRT-code), using
- 1 times NRT-code embedding in larger space [i] based on linear OOA(8173, 2796201, F81, 3, 19) (dual of [(2796201, 3), 8388530, 20]-NRT-code), using
- OOA 3-folding [i] based on linear OA(8173, large, F81, 19) (dual of [large, large−73, 20]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 21523361 | 818−1, defining interval I = [0,9], and minimum distance d ≥ |{−9,−8,…,9}|+1 = 20 (BCH-bound) [i]
- OOA 3-folding [i] based on linear OA(8173, large, F81, 19) (dual of [large, large−73, 20]-code), using
- 1 times NRT-code embedding in larger space [i] based on linear OOA(8173, 2796201, F81, 3, 19) (dual of [(2796201, 3), 8388530, 20]-NRT-code), using
- OOA 3-folding and stacking with additional row [i] based on linear OOA(8176, 2796202, F81, 3, 19) (dual of [(2796202, 3), 8388530, 20]-NRT-code), using
- net defined by OOA [i] based on linear OOA(8176, 932067, F81, 21, 19) (dual of [(932067, 21), 19573331, 20]-NRT-code), using
(80−19, 80, large)-Net over F81 — Digital
Digital (61, 80, large)-net over F81, using
- t-expansion [i] based on digital (60, 80, large)-net over F81, using
- 1 times m-reduction [i] based on digital (60, 81, large)-net over F81, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(8181, large, F81, 21) (dual of [large, large−81, 22]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 21523361 | 818−1, defining interval I = [0,10], and minimum distance d ≥ |{−10,−9,…,10}|+1 = 22 (BCH-bound) [i]
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(8181, large, F81, 21) (dual of [large, large−81, 22]-code), using
- 1 times m-reduction [i] based on digital (60, 81, large)-net over F81, using
(80−19, 80, large)-Net in Base 81 — Upper bound on s
There is no (61, 80, large)-net in base 81, because
- 17 times m-reduction [i] would yield (61, 63, large)-net in base 81, but