Best Known (81−25, 81, s)-Nets in Base 27
(81−25, 81, 1642)-Net over F27 — Constructive and digital
Digital (56, 81, 1642)-net over F27, using
- 273 times duplication [i] based on digital (53, 78, 1642)-net over F27, using
- net defined by OOA [i] based on linear OOA(2778, 1642, F27, 25, 25) (dual of [(1642, 25), 40972, 26]-NRT-code), using
- OOA 12-folding and stacking with additional row [i] based on linear OA(2778, 19705, F27, 25) (dual of [19705, 19627, 26]-code), using
- discarding factors / shortening the dual code based on linear OA(2778, 19707, F27, 25) (dual of [19707, 19629, 26]-code), using
- construction X applied to C([0,12]) ⊂ C([0,9]) [i] based on
- linear OA(2773, 19684, F27, 25) (dual of [19684, 19611, 26]-code), using the expurgated narrow-sense BCH-code C(I) with length 19684 | 276−1, defining interval I = [0,12], and minimum distance d ≥ |{−12,−11,…,12}|+1 = 26 (BCH-bound) [i]
- linear OA(2755, 19684, F27, 19) (dual of [19684, 19629, 20]-code), using the expurgated narrow-sense BCH-code C(I) with length 19684 | 276−1, defining interval I = [0,9], and minimum distance d ≥ |{−9,−8,…,9}|+1 = 20 (BCH-bound) [i]
- linear OA(275, 23, F27, 5) (dual of [23, 18, 6]-code or 23-arc in PG(4,27)), using
- discarding factors / shortening the dual code based on linear OA(275, 27, F27, 5) (dual of [27, 22, 6]-code or 27-arc in PG(4,27)), using
- Reed–Solomon code RS(22,27) [i]
- discarding factors / shortening the dual code based on linear OA(275, 27, F27, 5) (dual of [27, 22, 6]-code or 27-arc in PG(4,27)), using
- construction X applied to C([0,12]) ⊂ C([0,9]) [i] based on
- discarding factors / shortening the dual code based on linear OA(2778, 19707, F27, 25) (dual of [19707, 19629, 26]-code), using
- OOA 12-folding and stacking with additional row [i] based on linear OA(2778, 19705, F27, 25) (dual of [19705, 19627, 26]-code), using
- net defined by OOA [i] based on linear OOA(2778, 1642, F27, 25, 25) (dual of [(1642, 25), 40972, 26]-NRT-code), using
(81−25, 81, 25553)-Net over F27 — Digital
Digital (56, 81, 25553)-net over F27, using
(81−25, 81, large)-Net in Base 27 — Upper bound on s
There is no (56, 81, large)-net in base 27, because
- 23 times m-reduction [i] would yield (56, 58, large)-net in base 27, but