Best Known (68, 68+86, s)-Nets in Base 2
(68, 68+86, 43)-Net over F2 — Constructive and digital
Digital (68, 154, 43)-net over F2, using
- t-expansion [i] based on digital (59, 154, 43)-net over F2, using
- net from sequence [i] based on digital (59, 42)-sequence over F2, using
- Niederreiter–Xing sequence construction III based on the algebraic function field F/F2 with g(F) = 54, N(F) = 42, and 1 place with degree 6 [i] based on function field F/F2 with g(F) = 54 and N(F) ≥ 42, using an explicitly constructive algebraic function field [i]
- net from sequence [i] based on digital (59, 42)-sequence over F2, using
(68, 68+86, 49)-Net over F2 — Digital
Digital (68, 154, 49)-net over F2, using
- net from sequence [i] based on digital (68, 48)-sequence over F2, using
- Niederreiter–Xing sequence construction II/III [i] based on function field F/F2 with g(F) = 68 and N(F) ≥ 49, using
(68, 68+86, 145)-Net over F2 — Upper bound on s (digital)
There is no digital (68, 154, 146)-net over F2, because
- 14 times m-reduction [i] would yield digital (68, 140, 146)-net over F2, but
- extracting embedded orthogonal array [i] would yield linear OA(2140, 146, F2, 72) (dual of [146, 6, 73]-code), but
(68, 68+86, 146)-Net in Base 2 — Upper bound on s
There is no (68, 154, 147)-net in base 2, because
- the generalized Rao bound for nets shows that 2m ≥ 28227 789208 227207 189509 231291 891491 863335 351280 > 2154 [i]