MinT - Best Known (50−21, 50, s)-Nets in Base 8

Best Known (50−21, 50, s)-Nets in Base 8

(50−21, 50, 208)-Net over F₈ — Constructive and digital

Digital (29, 50, 208)-net over F₈, using

2 times m-reduction [i] based on digital (29, 52, 208)-net over F₈, using
- trace code for nets [i] based on digital (3, 26, 104)-net over F₆₄, using
  - net from sequence [i] based on digital (3, 103)-sequence over F₆₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₆₄ with g(F) = 3 and N(F) ≥ 104, using
      - a function field by SÃ©mirat [i]

(50−21, 50, 258)-Net in Base 8 — Constructive

(29, 50, 258)-net in base 8, using

trace code for nets [i] based on (4, 25, 129)-net in base 64, using
- 3 times m-reduction [i] based on (4, 28, 129)-net in base 64, using
  - base change [i] based on digital (0, 24, 129)-net over F₁₂₈, using
    - net from sequence [i] based on digital (0, 128)-sequence over F₁₂₈, using
      - generalized Faure sequence [i]
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₂₈ with g(F) = 0 and N(F) ≥ 129, using
        the rational function field F₁₂₈(x) [i]
      - Niederreiter sequence [i]

(50−21, 50, 258)-Net over F₈ — Digital

Digital (29, 50, 258)-net over F₈, using

trace code for nets [i] based on digital (4, 25, 129)-net over F₆₄, using
- net from sequence [i] based on digital (4, 128)-sequence over F₆₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₆₄ with g(F) = 4 and N(F) ≥ 129, using
    - K_1,1 from the tower of function fields by Niederreiter and Xing based on the tower by GarcÃa and Stichtenoth over F₆₄ [i]

(50−21, 50, 17213)-Net in Base 8 — Upper bound on s

There is no (29, 50, 17214)-net in base 8, because

1 times m-reduction [i] would yield (29, 49, 17214)-net in base 8, but
- the generalized Rao bound for nets shows that 8^mÂ â‰¥ 178 455795 202045 459035 084266 360446 598839 464642 > 8⁴⁹ [i]