MinT - Best Known (68, 105, s)-Nets in Base 4

Best Known (68, 105, s)-Nets in Base 4

(68, 105, 139)-Net over F₄ — Constructive and digital

Digital (68, 105, 139)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (1, 19, 9)-net over F₄, using
  - net from sequence [i] based on digital (1, 8)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 1 and N(F) ≥ 9, using
      - the Hermitian function field over F₄ [i]
2. digital (49, 86, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 43, 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, 105, 263)-Net over F₄ — Digital

Digital (68, 105, 263)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(68, 105, 7563)-Net in Base 4 — Upper bound on s

There is no (68, 105, 7564)-net in base 4, because

1 times m-reduction [i] would yield (68, 104, 7564)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 411 461378 986202 597048 373298 875977 837219 876837 387717 570471 941960 > 4¹⁰⁴ [i]