MinT - Best Known (19, 19+51, s)-Nets in Base 4

Best Known (19, 19+51, s)-Nets in Base 4

(19, 19+51, 33)-Net over F₄ — Constructive and digital

Digital (19, 70, 33)-net over F₄, using

t-expansion [i] based on digital (15, 70, 33)-net over F₄, using
- net from sequence [i] based on digital (15, 32)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 15 and N(F) ≥ 33, using
    - an explicitly constructive algebraic function field [i]

(19, 19+51, 41)-Net over F₄ — Digital

Digital (19, 70, 41)-net over F₄, using

t-expansion [i] based on digital (18, 70, 41)-net over F₄, using
- net from sequence [i] based on digital (18, 40)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 18 and N(F) ≥ 41, using
    - Drinfeld modules of rank 1 [i]

(19, 19+51, 90)-Net in Base 4 — Upper bound on s

There is no (19, 70, 91)-net in base 4, because

extracting embedded orthogonal array [i] would yield OA(4⁷⁰, 91, S₄, 51), but
- the linear programming bound shows that MÂ â‰¥ 3 288350 333146 363654 771213 531819 139649 454459 114817 060864 / 2 109973 626917 > 4⁷⁰ [i]