Best Known (91−29, 91, s)-Nets in Base 64
(91−29, 91, 18726)-Net over F64 — Constructive and digital
Digital (62, 91, 18726)-net over F64, using
- 641 times duplication [i] based on digital (61, 90, 18726)-net over F64, using
- net defined by OOA [i] based on linear OOA(6490, 18726, F64, 29, 29) (dual of [(18726, 29), 542964, 30]-NRT-code), using
- OOA 14-folding and stacking with additional row [i] based on linear OA(6490, 262165, F64, 29) (dual of [262165, 262075, 30]-code), using
- discarding factors / shortening the dual code based on linear OA(6490, 262168, F64, 29) (dual of [262168, 262078, 30]-code), using
- construction X applied to C([0,14]) ⊂ C([0,11]) [i] based on
- linear OA(6485, 262145, F64, 29) (dual of [262145, 262060, 30]-code), using the expurgated narrow-sense BCH-code C(I) with length 262145 | 646−1, defining interval I = [0,14], and minimum distance d ≥ |{−14,−13,…,14}|+1 = 30 (BCH-bound) [i]
- linear OA(6467, 262145, F64, 23) (dual of [262145, 262078, 24]-code), using the expurgated narrow-sense BCH-code C(I) with length 262145 | 646−1, defining interval I = [0,11], and minimum distance d ≥ |{−11,−10,…,11}|+1 = 24 (BCH-bound) [i]
- linear OA(645, 23, F64, 5) (dual of [23, 18, 6]-code or 23-arc in PG(4,64)), using
- discarding factors / shortening the dual code based on linear OA(645, 64, F64, 5) (dual of [64, 59, 6]-code or 64-arc in PG(4,64)), using
- Reed–Solomon code RS(59,64) [i]
- discarding factors / shortening the dual code based on linear OA(645, 64, F64, 5) (dual of [64, 59, 6]-code or 64-arc in PG(4,64)), using
- construction X applied to C([0,14]) ⊂ C([0,11]) [i] based on
- discarding factors / shortening the dual code based on linear OA(6490, 262168, F64, 29) (dual of [262168, 262078, 30]-code), using
- OOA 14-folding and stacking with additional row [i] based on linear OA(6490, 262165, F64, 29) (dual of [262165, 262075, 30]-code), using
- net defined by OOA [i] based on linear OOA(6490, 18726, F64, 29, 29) (dual of [(18726, 29), 542964, 30]-NRT-code), using
(91−29, 91, 181817)-Net over F64 — Digital
Digital (62, 91, 181817)-net over F64, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(6491, 181817, F64, 29) (dual of [181817, 181726, 30]-code), using
- discarding factors / shortening the dual code based on linear OA(6491, 262171, F64, 29) (dual of [262171, 262080, 30]-code), using
- construction X applied to Ce(28) ⊂ Ce(21) [i] based on
- linear OA(6485, 262144, F64, 29) (dual of [262144, 262059, 30]-code), using an extension Ce(28) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,28], and designed minimum distance d ≥ |I|+1 = 29 [i]
- linear OA(6464, 262144, F64, 22) (dual of [262144, 262080, 23]-code), using an extension Ce(21) of the primitive narrow-sense BCH-code C(I) with length 262143 = 643−1, defining interval I = [1,21], and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(646, 27, F64, 6) (dual of [27, 21, 7]-code or 27-arc in PG(5,64)), using
- discarding factors / shortening the dual code based on linear OA(646, 64, F64, 6) (dual of [64, 58, 7]-code or 64-arc in PG(5,64)), using
- Reed–Solomon code RS(58,64) [i]
- discarding factors / shortening the dual code based on linear OA(646, 64, F64, 6) (dual of [64, 58, 7]-code or 64-arc in PG(5,64)), using
- construction X applied to Ce(28) ⊂ Ce(21) [i] based on
- discarding factors / shortening the dual code based on linear OA(6491, 262171, F64, 29) (dual of [262171, 262080, 30]-code), using
(91−29, 91, large)-Net in Base 64 — Upper bound on s
There is no (62, 91, large)-net in base 64, because
- 27 times m-reduction [i] would yield (62, 64, large)-net in base 64, but