MinT - Best Known (216−78, 216, s)-Nets in Base 4

Best Known (216−78, 216, s)-Nets in Base 4

(216−78, 216, 152)-Net over F₄ — Constructive and digital

Digital (138, 216, 152)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (9, 48, 22)-net over F₄, using
  - net from sequence [i] based on digital (9, 21)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 9 and N(F) ≥ 22, using
      - an explicitly constructive algebraic function field [i]
2. digital (90, 168, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 84, 65)-net over F₁₆, using
    - net from sequence [i] based on digital (6, 64)-sequence over F₁₆, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₆ with g(F) = 6 and N(F) ≥ 65, using
        the Hermitian function field over F₁₆ [i]

(216−78, 216, 196)-Net in Base 4 — Constructive

(138, 216, 196)-net in base 4, using

2 times m-reduction [i] based on (138, 218, 196)-net in base 4, using
- trace code for nets [i] based on (29, 109, 98)-net in base 16, using
  - 1 times m-reduction [i] based on (29, 110, 98)-net in base 16, using
    - base change [i] based on digital (7, 88, 98)-net over F₃₂, using
      - net from sequence [i] based on digital (7, 97)-sequence over F₃₂, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 7 and N(F) ≥ 98, using
        a function field by SÃ©mirat [i]

(216−78, 216, 444)-Net over F₄ — Digital

Digital (138, 216, 444)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(216−78, 216, 11054)-Net in Base 4 — Upper bound on s

There is no (138, 216, 11055)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 11113 163108 850736 964867 939855 383890 382091 529985 852513 791285 455223 046690 109450 286280 921600 480901 933329 062402 616926 659455 008026 637340 > 4²¹⁶ [i]