MinT - Best Known (159−57, 159, s)-Nets in Base 4

Best Known (159−57, 159, s)-Nets in Base 4

(159−57, 159, 147)-Net over F₄ — Constructive and digital

Digital (102, 159, 147)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (5, 33, 17)-net over F₄, using
  - net from sequence [i] based on digital (5, 16)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 5 and N(F) ≥ 17, using
      - an explicitly constructive algebraic function field [i]
2. digital (69, 126, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 63, 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]

(159−57, 159, 152)-Net in Base 4 — Constructive

(102, 159, 152)-net in base 4, using

t-expansion [i] based on (101, 159, 152)-net in base 4, using
- 1 times m-reduction [i] based on (101, 160, 152)-net in base 4, using
  - trace code for nets [i] based on (21, 80, 76)-net in base 16, using
    - base change [i] based on digital (5, 64, 76)-net over F₃₂, using
      - net from sequence [i] based on digital (5, 75)-sequence over F₃₂, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 5 and N(F) ≥ 76, using
        a function field by SÃ©mirat [i]

(159−57, 159, 348)-Net over F₄ — Digital

Digital (102, 159, 348)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(159−57, 159, 9379)-Net in Base 4 — Upper bound on s

There is no (102, 159, 9380)-net in base 4, because

1 times m-reduction [i] would yield (102, 158, 9380)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 133804 716496 822124 948771 555825 817922 985543 522752 129762 280334 142365 006417 136632 897937 889053 733704 > 4¹⁵⁸ [i]