Best Known (50−21, 50, s)-Nets in Base 32
(50−21, 50, 219)-Net over F32 — Constructive and digital
Digital (29, 50, 219)-net over F32, using
- (u, u+v)-construction [i] based on
- digital (8, 18, 99)-net over F32, using
- 1 times m-reduction [i] based on digital (8, 19, 99)-net over F32, using
- generalized (u, u+v)-construction [i] based on
- digital (0, 3, 33)-net over F32, using
- net from sequence [i] based on digital (0, 32)-sequence over F32, using
- generalized Faure sequence [i]
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F32 with g(F) = 0 and N(F) ≥ 33, using
- the rational function field F32(x) [i]
- Niederreiter sequence [i]
- net from sequence [i] based on digital (0, 32)-sequence over F32, using
- digital (0, 5, 33)-net over F32, using
- net from sequence [i] based on digital (0, 32)-sequence over F32 (see above)
- digital (0, 11, 33)-net over F32, using
- net from sequence [i] based on digital (0, 32)-sequence over F32 (see above)
- digital (0, 3, 33)-net over F32, using
- generalized (u, u+v)-construction [i] based on
- 1 times m-reduction [i] based on digital (8, 19, 99)-net over F32, using
- digital (11, 32, 120)-net over F32, using
- net from sequence [i] based on digital (11, 119)-sequence over F32, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F32 with g(F) = 11 and N(F) ≥ 120, using
- net from sequence [i] based on digital (11, 119)-sequence over F32, using
- digital (8, 18, 99)-net over F32, using
(50−21, 50, 409)-Net in Base 32 — Constructive
(29, 50, 409)-net in base 32, using
- net defined by OOA [i] based on OOA(3250, 409, S32, 21, 21), using
- OOA 10-folding and stacking with additional row [i] based on OA(3250, 4091, S32, 21), using
- discarding factors based on OA(3250, 4098, S32, 21), using
- discarding parts of the base [i] based on linear OA(6441, 4098, F64, 21) (dual of [4098, 4057, 22]-code), using
- construction X applied to Ce(20) ⊂ Ce(19) [i] based on
- linear OA(6441, 4096, F64, 21) (dual of [4096, 4055, 22]-code), using an extension Ce(20) of the primitive narrow-sense BCH-code C(I) with length 4095 = 642−1, defining interval I = [1,20], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(6439, 4096, F64, 20) (dual of [4096, 4057, 21]-code), using an extension Ce(19) of the primitive narrow-sense BCH-code C(I) with length 4095 = 642−1, defining interval I = [1,19], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(640, 2, F64, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(640, s, F64, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- construction X applied to Ce(20) ⊂ Ce(19) [i] based on
- discarding parts of the base [i] based on linear OA(6441, 4098, F64, 21) (dual of [4098, 4057, 22]-code), using
- discarding factors based on OA(3250, 4098, S32, 21), using
- OOA 10-folding and stacking with additional row [i] based on OA(3250, 4091, S32, 21), using
(50−21, 50, 1564)-Net over F32 — Digital
Digital (29, 50, 1564)-net over F32, using
- embedding of OOA with Gilbert–Varšamov bound [i] based on linear OA(3250, 1564, F32, 21) (dual of [1564, 1514, 22]-code), using
- 528 step Varšamov–Edel lengthening with (ri) = (4, 0, 0, 1, 11 times 0, 1, 33 times 0, 1, 83 times 0, 1, 161 times 0, 1, 232 times 0) [i] based on linear OA(3241, 1027, F32, 21) (dual of [1027, 986, 22]-code), using
- construction XX applied to C1 = C([1022,18]), C2 = C([0,19]), C3 = C1 + C2 = C([0,18]), and C∩ = C1 ∩ C2 = C([1022,19]) [i] based on
- linear OA(3239, 1023, F32, 20) (dual of [1023, 984, 21]-code), using the primitive BCH-code C(I) with length 1023 = 322−1, defining interval I = {−1,0,…,18}, and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(3239, 1023, F32, 20) (dual of [1023, 984, 21]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 1023 = 322−1, defining interval I = [0,19], and designed minimum distance d ≥ |I|+1 = 21 [i]
- linear OA(3241, 1023, F32, 21) (dual of [1023, 982, 22]-code), using the primitive BCH-code C(I) with length 1023 = 322−1, defining interval I = {−1,0,…,19}, and designed minimum distance d ≥ |I|+1 = 22 [i]
- linear OA(3237, 1023, F32, 19) (dual of [1023, 986, 20]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 1023 = 322−1, defining interval I = [0,18], and designed minimum distance d ≥ |I|+1 = 20 [i]
- linear OA(320, 2, F32, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(320, s, F32, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
- linear OA(320, 2, F32, 0) (dual of [2, 2, 1]-code) (see above)
- construction XX applied to C1 = C([1022,18]), C2 = C([0,19]), C3 = C1 + C2 = C([0,18]), and C∩ = C1 ∩ C2 = C([1022,19]) [i] based on
- 528 step Varšamov–Edel lengthening with (ri) = (4, 0, 0, 1, 11 times 0, 1, 33 times 0, 1, 83 times 0, 1, 161 times 0, 1, 232 times 0) [i] based on linear OA(3241, 1027, F32, 21) (dual of [1027, 986, 22]-code), using
(50−21, 50, 3466162)-Net in Base 32 — Upper bound on s
There is no (29, 50, 3466163)-net in base 32, because
- 1 times m-reduction [i] would yield (29, 49, 3466163)-net in base 32, but
- the generalized Rao bound for nets shows that 32m ≥ 56 539214 184397 508719 243202 178900 976212 676286 643521 159957 527564 116053 407338 > 3249 [i]