MinT - Best Known (189−64, 189, s)-Nets in Base 4

Best Known (189−64, 189, s)-Nets in Base 4

(189−64, 189, 163)-Net over F₄ — Constructive and digital

Digital (125, 189, 163)-net over F₄, using

t-expansion [i] based on digital (124, 189, 163)-net over F₄, using
- (u,Â u+v)-construction [i] based on
  1. digital (15, 47, 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 (77, 142, 130)-net over F₄, using
    - trace code for nets [i] based on digital (6, 71, 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]

(189−64, 189, 240)-Net in Base 4 — Constructive

(125, 189, 240)-net in base 4, using

1 times m-reduction [i] based on (125, 190, 240)-net in base 4, using
- trace code for nets [i] based on (30, 95, 120)-net in base 16, using
  - base change [i] based on digital (11, 76, 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]

(189−64, 189, 494)-Net over F₄ — Digital

Digital (125, 189, 494)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(189−64, 189, 15308)-Net in Base 4 — Upper bound on s

There is no (125, 189, 15309)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 616204 525673 159920 828748 510768 047143 493581 805795 334076 650820 433090 007855 469130 911100 878547 675706 151557 434191 773650 > 4¹⁸⁹ [i]