MinT - Best Known (225−81, 225, s)-Nets in Base 4

Best Known (225−81, 225, s)-Nets in Base 4

(225−81, 225, 157)-Net over F₄ — Constructive and digital

Digital (144, 225, 157)-net over F₄, using

4¹ times duplication [i] based on digital (143, 224, 157)-net over F₄, using
- (u,Â u+v)-construction [i] based on
  1. digital (10, 50, 27)-net over F₄, using
    - net from sequence [i] based on digital (10, 26)-sequence over F₄, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 10 and N(F) ≥ 27, using
        an explicitly constructive algebraic function field [i]
  2. digital (93, 174, 130)-net over F₄, using
    - trace code for nets [i] based on digital (6, 87, 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]

(225−81, 225, 196)-Net in Base 4 — Constructive

(144, 225, 196)-net in base 4, using

3 times m-reduction [i] based on (144, 228, 196)-net in base 4, using
- trace code for nets [i] based on (30, 114, 98)-net in base 16, using
  - 1 times m-reduction [i] based on (30, 115, 98)-net in base 16, using
    - base change [i] based on digital (7, 92, 98)-net over F₃₂, using
      - net from sequence [i] based on digital (7, 97)-sequence over F₃₂, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 7 and N(F) ≥ 98, using
        a function field by SÃ©mirat [i]

(225−81, 225, 465)-Net over F₄ — Digital

Digital (144, 225, 465)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(225−81, 225, 12332)-Net in Base 4 — Upper bound on s

There is no (144, 225, 12333)-net in base 4, because

1 times m-reduction [i] would yield (144, 224, 12333)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 727 936987 073568 398904 083697 840400 218198 856120 470177 900377 965885 153256 455657 644701 328084 402569 613946 944198 820258 464404 910178 466944 167079 > 4²²⁴ [i]