MinT - Best Known (68, 104, s)-Nets in Base 4

Best Known (68, 104, s)-Nets in Base 4

(68, 104, 140)-Net over F₄ — Constructive and digital

Digital (68, 104, 140)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (2, 20, 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 (48, 84, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 42, 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]

(68, 104, 152)-Net in Base 4 — Constructive

(68, 104, 152)-net in base 4, using

trace code for nets [i] based on (16, 52, 76)-net in base 16, using
- 3 times m-reduction [i] based on (16, 55, 76)-net in base 16, using
  - base change [i] based on digital (5, 44, 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]

(68, 104, 279)-Net over F₄ — Digital

Digital (68, 104, 279)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(68, 104, 7563)-Net in Base 4 — Upper bound on s

There is no (68, 104, 7564)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 411 461378 986202 597048 373298 875977 837219 876837 387717 570471 941960 > 4¹⁰⁴ [i]