Best Known (72, 91, s)-Nets in Base 64
(72, 91, 933091)-Net over F64 — Constructive and digital
Digital (72, 91, 933091)-net over F64, using
- (u, u+v)-construction [i] based on
- digital (9, 18, 1025)-net over F64, using
- net defined by OOA [i] based on linear OOA(6418, 1025, F64, 9, 9) (dual of [(1025, 9), 9207, 10]-NRT-code), using
- OOA 4-folding and stacking with additional row [i] based on linear OA(6418, 4101, F64, 9) (dual of [4101, 4083, 10]-code), using
- discarding factors / shortening the dual code based on linear OA(6418, 4102, F64, 9) (dual of [4102, 4084, 10]-code), using
- construction X applied to C([0,4]) ⊂ C([0,3]) [i] based on
- linear OA(6417, 4097, F64, 9) (dual of [4097, 4080, 10]-code), using the expurgated narrow-sense BCH-code C(I) with length 4097 | 644−1, defining interval I = [0,4], and minimum distance d ≥ |{−4,−3,…,4}|+1 = 10 (BCH-bound) [i]
- linear OA(6413, 4097, F64, 7) (dual of [4097, 4084, 8]-code), using the expurgated narrow-sense BCH-code C(I) with length 4097 | 644−1, defining interval I = [0,3], and minimum distance d ≥ |{−3,−2,…,3}|+1 = 8 (BCH-bound) [i]
- linear OA(641, 5, F64, 1) (dual of [5, 4, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(641, s, F64, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
- construction X applied to C([0,4]) ⊂ C([0,3]) [i] based on
- discarding factors / shortening the dual code based on linear OA(6418, 4102, F64, 9) (dual of [4102, 4084, 10]-code), using
- OOA 4-folding and stacking with additional row [i] based on linear OA(6418, 4101, F64, 9) (dual of [4101, 4083, 10]-code), using
- net defined by OOA [i] based on linear OOA(6418, 1025, F64, 9, 9) (dual of [(1025, 9), 9207, 10]-NRT-code), using
- digital (54, 73, 932066)-net over F64, using
- net defined by OOA [i] based on linear OOA(6473, 932066, F64, 19, 19) (dual of [(932066, 19), 17709181, 20]-NRT-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(6473, 8388595, F64, 19) (dual of [8388595, 8388522, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(6473, large, F64, 19) (dual of [large, large−73, 20]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 16777217 | 648−1, defining interval I = [0,9], and minimum distance d ≥ |{−9,−8,…,9}|+1 = 20 (BCH-bound) [i]
- discarding factors / shortening the dual code based on linear OA(6473, large, F64, 19) (dual of [large, large−73, 20]-code), using
- OOA 9-folding and stacking with additional row [i] based on linear OA(6473, 8388595, F64, 19) (dual of [8388595, 8388522, 20]-code), using
- net defined by OOA [i] based on linear OOA(6473, 932066, F64, 19, 19) (dual of [(932066, 19), 17709181, 20]-NRT-code), using
- digital (9, 18, 1025)-net over F64, using
(72, 91, large)-Net over F64 — Digital
Digital (72, 91, large)-net over F64, using
- 643 times duplication [i] based on digital (69, 88, large)-net over F64, using
- t-expansion [i] based on digital (66, 88, large)-net over F64, using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(6488, large, F64, 22) (dual of [large, large−88, 23]-code), using
- 3 times code embedding in larger space [i] based on linear OA(6485, large, F64, 22) (dual of [large, large−85, 23]-code), using
- the primitive expurgated narrow-sense BCH-code C(I) with length 16777215 = 644−1, defining interval I = [0,21], and designed minimum distance d ≥ |I|+1 = 23 [i]
- 3 times code embedding in larger space [i] based on linear OA(6485, large, F64, 22) (dual of [large, large−85, 23]-code), using
- embedding of OOA with Gilbert–VarÅ¡amov bound [i] based on linear OA(6488, large, F64, 22) (dual of [large, large−88, 23]-code), using
- t-expansion [i] based on digital (66, 88, large)-net over F64, using
(72, 91, large)-Net in Base 64 — Upper bound on s
There is no (72, 91, large)-net in base 64, because
- 17 times m-reduction [i] would yield (72, 74, large)-net in base 64, but