Best Known (218, 235, s)-Nets in Base 3
(218, 235, 1447160)-Net over F3 — Constructive and digital
Digital (218, 235, 1447160)-net over F3, using
- (u, u+v)-construction [i] based on
- digital (61, 69, 398585)-net over F3, using
- net defined by OOA [i] based on linear OOA(369, 398585, F3, 8, 8) (dual of [(398585, 8), 3188611, 9]-NRT-code), using
- OA 4-folding and stacking [i] based on linear OA(369, 1594340, F3, 8) (dual of [1594340, 1594271, 9]-code), using
- 2 times code embedding in larger space [i] based on linear OA(367, 1594338, F3, 8) (dual of [1594338, 1594271, 9]-code), using
- construction X4 applied to Ce(7) ⊂ Ce(6) [i] based on
- linear OA(366, 1594323, F3, 8) (dual of [1594323, 1594257, 9]-code), using an extension Ce(7) of the primitive narrow-sense BCH-code C(I) with length 1594322 = 313−1, defining interval I = [1,7], and designed minimum distance d ≥ |I|+1 = 8 [i]
- linear OA(353, 1594323, F3, 7) (dual of [1594323, 1594270, 8]-code), using an extension Ce(6) of the primitive narrow-sense BCH-code C(I) with length 1594322 = 313−1, defining interval I = [1,6], and designed minimum distance d ≥ |I|+1 = 7 [i]
- linear OA(314, 15, F3, 14) (dual of [15, 1, 15]-code or 15-arc in PG(13,3)), using
- dual of repetition code with length 15 [i]
- linear OA(31, 15, F3, 1) (dual of [15, 14, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(31, s, F3, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X4 applied to Ce(7) ⊂ Ce(6) [i] based on
- 2 times code embedding in larger space [i] based on linear OA(367, 1594338, F3, 8) (dual of [1594338, 1594271, 9]-code), using
- OA 4-folding and stacking [i] based on linear OA(369, 1594340, F3, 8) (dual of [1594340, 1594271, 9]-code), using
- net defined by OOA [i] based on linear OOA(369, 398585, F3, 8, 8) (dual of [(398585, 8), 3188611, 9]-NRT-code), using
- digital (149, 166, 1048575)-net over F3, using
- net defined by OOA [i] based on linear OOA(3166, 1048575, F3, 17, 17) (dual of [(1048575, 17), 17825609, 18]-NRT-code), using
- OOA 8-folding and stacking with additional row [i] based on linear OA(3166, 8388601, F3, 17) (dual of [8388601, 8388435, 18]-code), using
- discarding factors / shortening the dual code based on linear OA(3166, large, F3, 17) (dual of [large, large−166, 18]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 14348906 = 315−1, defining interval I = [0,16], and designed minimum distance d ≥ |I|+1 = 18 [i]
- discarding factors / shortening the dual code based on linear OA(3166, large, F3, 17) (dual of [large, large−166, 18]-code), using
- OOA 8-folding and stacking with additional row [i] based on linear OA(3166, 8388601, F3, 17) (dual of [8388601, 8388435, 18]-code), using
- net defined by OOA [i] based on linear OOA(3166, 1048575, F3, 17, 17) (dual of [(1048575, 17), 17825609, 18]-NRT-code), using
- digital (61, 69, 398585)-net over F3, using
(218, 235, large)-Net over F3 — Digital
Digital (218, 235, large)-net over F3, using
- 37 times duplication [i] based on digital (211, 228, large)-net over F3, using
- t-expansion [i] based on digital (209, 228, large)-net over F3, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(3228, large, F3, 19) (dual of [large, large−228, 20]-code), using
- 47 times code embedding in larger space [i] based on linear OA(3181, large, F3, 19) (dual of [large, large−181, 20]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 14348908 | 330−1, defining interval I = [0,9], and minimum distance d ≥ |{−9,−8,…,9}|+1 = 20 (BCH-bound) [i]
- 47 times code embedding in larger space [i] based on linear OA(3181, large, F3, 19) (dual of [large, large−181, 20]-code), using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(3228, large, F3, 19) (dual of [large, large−228, 20]-code), using
- t-expansion [i] based on digital (209, 228, large)-net over F3, using
(218, 235, large)-Net in Base 3 — Upper bound on s
There is no (218, 235, large)-net in base 3, because
- 15 times m-reduction [i] would yield (218, 220, large)-net in base 3, but