MinT - Best Known (191−66, 191, s)-Nets in Base 4

Best Known (191−66, 191, s)-Nets in Base 4

(191−66, 191, 160)-Net over F₄ — Constructive and digital

Digital (125, 191, 160)-net over F₄, using

1 times m-reduction [i] based on digital (125, 192, 160)-net over F₄, using
- (u,Â u+v)-construction [i] based on
  1. digital (13, 46, 30)-net over F₄, using
    - net from sequence [i] based on digital (13, 29)-sequence over F₄, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 13 and N(F) ≥ 30, using
        F₄ from the tower of function fields by GarcÃa and Stichtenoth over F₄ [i]
  2. digital (79, 146, 130)-net over F₄, using
    - trace code for nets [i] based on digital (6, 73, 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]

(191−66, 191, 208)-Net in Base 4 — Constructive

(125, 191, 208)-net in base 4, using

4¹ times duplication [i] based on (124, 190, 208)-net in base 4, using
- t-expansion [i] based on (123, 190, 208)-net in base 4, using
  - trace code for nets [i] based on (28, 95, 104)-net in base 16, using
    - base change [i] based on digital (9, 76, 104)-net over F₃₂, using
      - net from sequence [i] based on digital (9, 103)-sequence over F₃₂, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 9 and N(F) ≥ 104, using
        a function field by SÃ©mirat [i]

(191−66, 191, 464)-Net over F₄ — Digital

Digital (125, 191, 464)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(191−66, 191, 13366)-Net in Base 4 — Upper bound on s

There is no (125, 191, 13367)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 9 870362 346703 552727 555716 173880 111229 456785 322662 347631 019034 770885 020692 956232 173640 539688 339742 471783 275378 764074 > 4¹⁹¹ [i]