Best Known (40−38, 40, s)-Nets in Base 16
(40−38, 40, 33)-Net over F16 — Constructive and digital
Digital (2, 40, 33)-net over F16, using
- net from sequence [i] based on digital (2, 32)-sequence over F16, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F16 with g(F) = 2 and N(F) ≥ 33, using
(40−38, 40, 50)-Net over F16 — Upper bound on s (digital)
There is no digital (2, 40, 51)-net over F16, because
- 6 times m-reduction [i] would yield digital (2, 34, 51)-net over F16, but
- extracting embedded orthogonal array [i] would yield linear OA(1634, 51, F16, 32) (dual of [51, 17, 33]-code), but
- residual code [i] would yield OA(162, 18, S16, 2), but
- bound for OAs with strength k = 2 [i]
- the Rao or (dual) Hamming bound shows that M ≥ 271 > 162 [i]
- residual code [i] would yield OA(162, 18, S16, 2), but
- extracting embedded orthogonal array [i] would yield linear OA(1634, 51, F16, 32) (dual of [51, 17, 33]-code), but
(40−38, 40, 89)-Net in Base 16 — Upper bound on s
There is no (2, 40, 90)-net in base 16, because
- extracting embedded orthogonal array [i] would yield OA(1640, 90, S16, 38), but
- the linear programming bound shows that M ≥ 5379 055054 547459 414645 024382 871546 714062 262569 734632 374272 / 3676 690995 > 1640 [i]