Best Known (72−20, 72, s)-Nets in Base 81
(72−20, 72, 53294)-Net over F81 — Constructive and digital
Digital (52, 72, 53294)-net over F81, using
- (u, u+v)-construction [i] based on
- digital (4, 14, 150)-net over F81, using
- net from sequence [i] based on digital (4, 149)-sequence over F81, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F81 with g(F) = 4 and N(F) ≥ 150, using
- net from sequence [i] based on digital (4, 149)-sequence over F81, using
- digital (38, 58, 53144)-net over F81, using
- net defined by OOA [i] based on linear OOA(8158, 53144, F81, 20, 20) (dual of [(53144, 20), 1062822, 21]-NRT-code), using
- OA 10-folding and stacking [i] based on linear OA(8158, 531440, F81, 20) (dual of [531440, 531382, 21]-code), using
- discarding factors / shortening the dual code based on linear OA(8158, 531441, F81, 20) (dual of [531441, 531383, 21]-code), using
- an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 531440 = 813−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- discarding factors / shortening the dual code based on linear OA(8158, 531441, F81, 20) (dual of [531441, 531383, 21]-code), using
- OA 10-folding and stacking [i] based on linear OA(8158, 531440, F81, 20) (dual of [531440, 531382, 21]-code), using
- net defined by OOA [i] based on linear OOA(8158, 53144, F81, 20, 20) (dual of [(53144, 20), 1062822, 21]-NRT-code), using
- digital (4, 14, 150)-net over F81, using
(72−20, 72, 1691538)-Net over F81 — Digital
Digital (52, 72, 1691538)-net over F81, using
(72−20, 72, large)-Net in Base 81 — Upper bound on s
There is no (52, 72, large)-net in base 81, because
- 18 times m-reduction [i] would yield (52, 54, large)-net in base 81, but