MinT - Best Known (20, 20+39, s)-Nets in Base 128

Best Known (20, 20+39, s)-Nets in Base 128

(20, 20+39, 288)-Net over F₁₂₈ — Constructive and digital

Digital (20, 59, 288)-net over F₁₂₈, using

t-expansion [i] based on digital (9, 59, 288)-net over F₁₂₈, using
- net from sequence [i] based on digital (9, 287)-sequence over F₁₂₈, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₂₈ with g(F) = 9 and N(F) ≥ 288, using
    - a function field by SÃ©mirat [i]

(20, 20+39, 386)-Net over F₁₂₈ — Digital

Digital (20, 59, 386)-net over F₁₂₈, using

t-expansion [i] based on digital (15, 59, 386)-net over F₁₂₈, using
- net from sequence [i] based on digital (15, 385)-sequence over F₁₂₈, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₂₈ with g(F) = 15 and N(F) ≥ 386, using
    - a curve from the manYPoints database [i]

(20, 20+39, 513)-Net in Base 128

(20, 59, 513)-net in base 128, using

t-expansion [i] based on (17, 59, 513)-net in base 128, using
- 13 times m-reduction [i] based on (17, 72, 513)-net in base 128, using
  - base change [i] based on digital (8, 63, 513)-net over F₂₅₆, using
    - net from sequence [i] based on digital (8, 512)-sequence over F₂₅₆, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂₅₆ with g(F) = 8 and N(F) ≥ 513, using
        K_1,1 from the tower of function fields by Niederreiter and Xing based on the tower by GarcÃa and Stichtenoth over F₂₅₆ [i]

(20, 20+39, 169014)-Net in Base 128 — Upper bound on s

There is no (20, 59, 169015)-net in base 128, because

1 times m-reduction [i] would yield (20, 58, 169015)-net in base 128, but
- the generalized Rao bound for nets shows that 128^mÂ â‰¥ 165 273226 089315 913491 060675 656977 159279 833898 866475 300775 038772 705300 947100 946939 888242 857652 187034 414482 348647 609656 019876 > 128⁵⁸ [i]