MinT - Best Known (128, 128+76, s)-Nets in Base 4

Best Known (128, 128+76, s)-Nets in Base 4

(128, 128+76, 140)-Net over F₄ — Constructive and digital

Digital (128, 204, 140)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (2, 40, 10)-net over F₄, using
  - net from sequence [i] based on digital (2, 9)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 2 and N(F) ≥ 10, using
      - an explicitly constructive algebraic function field [i]
2. digital (88, 164, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 82, 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]

(128, 128+76, 152)-Net in Base 4 — Constructive

(128, 204, 152)-net in base 4, using

trace code for nets [i] based on (26, 102, 76)-net in base 16, using
- 3 times m-reduction [i] based on (26, 105, 76)-net in base 16, using
  - base change [i] based on digital (5, 84, 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]

(128, 128+76, 378)-Net over F₄ — Digital

Digital (128, 204, 378)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(128, 128+76, 8515)-Net in Base 4 — Upper bound on s

There is no (128, 204, 8516)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 662 591359 954725 850814 872225 195683 413840 577897 620296 234936 983768 621673 055545 121817 288922 023035 118610 300380 768699 563964 052240 > 4²⁰⁴ [i]