MinT - Best Known (221−38, 221, s)-Nets in Base 4

Best Known (221−38, 221, s)-Nets in Base 4

(221−38, 221, 1554)-Net over F₄ — Constructive and digital

Digital (183, 221, 1554)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (4, 23, 15)-net over F₄, using
  - net from sequence [i] based on digital (4, 14)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 4 and N(F) ≥ 15, using
      - an explicitly constructive algebraic function field [i]
2. digital (160, 198, 1539)-net over F₄, using
  - trace code for nets [i] based on digital (28, 66, 513)-net over F₆₄, using
    - net from sequence [i] based on digital (28, 512)-sequence over F₆₄, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₆₄ with g(F) = 28 and N(F) ≥ 513, using
        the Hermitian function field over F₆₄ [i]

(221−38, 221, 19288)-Net over F₄ — Digital

Digital (183, 221, 19288)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(221−38, 221, large)-Net in Base 4 — Upper bound on s

There is no (183, 221, large)-net in base 4, because

36 times m-reduction [i] would yield (183, 185, large)-net in base 4, but
- mutually orthogonal hypercube bound [i]