MinT - Best Known (197−67, 197, s)-Nets in Base 4

Best Known (197−67, 197, s)-Nets in Base 4

(197−67, 197, 163)-Net over F₄ — Constructive and digital

Digital (130, 197, 163)-net over F₄, using

2 times m-reduction [i] based on digital (130, 199, 163)-net over F₄, using
- (u,Â u+v)-construction [i] based on
  1. digital (15, 49, 33)-net over F₄, using
    - net from sequence [i] based on digital (15, 32)-sequence over F₄, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 15 and N(F) ≥ 33, using
        an explicitly constructive algebraic function field [i]
  2. digital (81, 150, 130)-net over F₄, using
    - trace code for nets [i] based on digital (6, 75, 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]

(197−67, 197, 240)-Net in Base 4 — Constructive

(130, 197, 240)-net in base 4, using

1 times m-reduction [i] based on (130, 198, 240)-net in base 4, using
- trace code for nets [i] based on (31, 99, 120)-net in base 16, using
  - 1 times m-reduction [i] based on (31, 100, 120)-net in base 16, using
    - base change [i] based on digital (11, 80, 120)-net over F₃₂, using
      - net from sequence [i] based on digital (11, 119)-sequence over F₃₂, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 11 and N(F) ≥ 120, using
        a function field by SÃ©mirat [i]

(197−67, 197, 504)-Net over F₄ — Digital

Digital (130, 197, 504)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(197−67, 197, 16496)-Net in Base 4 — Upper bound on s

There is no (130, 197, 16497)-net in base 4, because

1 times m-reduction [i] would yield (130, 196, 16497)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 10094 903755 074559 617352 784327 557441 686497 969326 959223 862653 783535 238338 417025 724802 076743 495136 805719 783387 964010 586388 > 4¹⁹⁶ [i]