Best Known (42, 42+14, s)-Nets in Base 64
(42, 42+14, 1198371)-Net over F64 — Constructive and digital
Digital (42, 56, 1198371)-net over F64, using
- 1 times m-reduction [i] based on digital (42, 57, 1198371)-net over F64, using
- net defined by OOA [i] based on linear OOA(6457, 1198371, F64, 15, 15) (dual of [(1198371, 15), 17975508, 16]-NRT-code), using
- OOA 7-folding and stacking with additional row [i] based on linear OA(6457, 8388598, F64, 15) (dual of [8388598, 8388541, 16]-code), using
- discarding factors / shortening the dual code based on linear OA(6457, large, F64, 15) (dual of [large, large−57, 16]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 16777217 | 648−1, defining interval I = [0,7], and minimum distance d ≥ |{−7,−6,…,7}|+1 = 16 (BCH-bound) [i]
- discarding factors / shortening the dual code based on linear OA(6457, large, F64, 15) (dual of [large, large−57, 16]-code), using
- OOA 7-folding and stacking with additional row [i] based on linear OA(6457, 8388598, F64, 15) (dual of [8388598, 8388541, 16]-code), using
- net defined by OOA [i] based on linear OOA(6457, 1198371, F64, 15, 15) (dual of [(1198371, 15), 17975508, 16]-NRT-code), using
(42, 42+14, large)-Net over F64 — Digital
Digital (42, 56, large)-net over F64, using
- 641 times duplication [i] based on digital (41, 55, large)-net over F64, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(6455, large, F64, 14) (dual of [large, large−55, 15]-code), using
- 2 times code embedding in larger space [i] based on linear OA(6453, large, F64, 14) (dual of [large, large−53, 15]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 16777215 = 644−1, defining interval I = [0,13], and designed minimum distance d ≥ |I|+1 = 15 [i]
- 2 times code embedding in larger space [i] based on linear OA(6453, large, F64, 14) (dual of [large, large−53, 15]-code), using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(6455, large, F64, 14) (dual of [large, large−55, 15]-code), using
(42, 42+14, large)-Net in Base 64 — Upper bound on s
There is no (42, 56, large)-net in base 64, because
- 12 times m-reduction [i] would yield (42, 44, large)-net in base 64, but