Best Known (42, 68, s)-Nets in Base 81
(42, 68, 740)-Net over F81 — Constructive and digital
Digital (42, 68, 740)-net over F81, using
- t-expansion [i] based on digital (41, 68, 740)-net over F81, using
- (u, u+v)-construction [i] based on
- digital (12, 25, 1093)-net over F81, using
- net defined by OOA [i] based on linear OOA(8125, 1093, F81, 13, 13) (dual of [(1093, 13), 14184, 14]-NRT-code), using
- OOA 6-folding and stacking with additional row [i] based on linear OA(8125, 6559, F81, 13) (dual of [6559, 6534, 14]-code), using
- discarding factors / shortening the dual code based on linear OA(8125, 6561, F81, 13) (dual of [6561, 6536, 14]-code), using
- an extension Ce(12) of the primitive narrow-sense BCH-code C(I) with length 6560 = 812−1, defining interval I = [1,12], and designed minimum distance d ≥ |I|+1 = 13 [i]
- discarding factors / shortening the dual code based on linear OA(8125, 6561, F81, 13) (dual of [6561, 6536, 14]-code), using
- OOA 6-folding and stacking with additional row [i] based on linear OA(8125, 6559, F81, 13) (dual of [6559, 6534, 14]-code), using
- net defined by OOA [i] based on linear OOA(8125, 1093, F81, 13, 13) (dual of [(1093, 13), 14184, 14]-NRT-code), using
- digital (16, 43, 370)-net over F81, using
- net from sequence [i] based on digital (16, 369)-sequence over F81, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F81 with g(F) = 16 and N(F) ≥ 370, using
- net from sequence [i] based on digital (16, 369)-sequence over F81, using
- digital (12, 25, 1093)-net over F81, using
- (u, u+v)-construction [i] based on
(42, 68, 19765)-Net over F81 — Digital
Digital (42, 68, 19765)-net over F81, using
(42, 68, large)-Net in Base 81 — Upper bound on s
There is no (42, 68, large)-net in base 81, because
- 24 times m-reduction [i] would yield (42, 44, large)-net in base 81, but