MinT - Best Known (91, 91+51, s)-Nets in Base 4

Best Known (91, 91+51, s)-Nets in Base 4

(91, 91+51, 144)-Net over F₄ — Constructive and digital

Digital (91, 142, 144)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (3, 28, 14)-net over F₄, using
  - net from sequence [i] based on digital (3, 13)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 3 and N(F) ≥ 14, using
      - an explicitly constructive algebraic function field [i]
2. digital (63, 114, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 57, 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]

(91, 91+51, 152)-Net in Base 4 — Constructive

(91, 142, 152)-net in base 4, using

4² times duplication [i] based on (89, 140, 152)-net in base 4, using
- trace code for nets [i] based on (19, 70, 76)-net in base 16, using
  - base change [i] based on digital (5, 56, 76)-net over F₃₂, using
    - net from sequence [i] based on digital (5, 75)-sequence over F₃₂, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 5 and N(F) ≥ 76, using
        a function field by SÃ©mirat [i]

(91, 91+51, 314)-Net over F₄ — Digital

Digital (91, 142, 314)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(91, 91+51, 8415)-Net in Base 4 — Upper bound on s

There is no (91, 142, 8416)-net in base 4, because

1 times m-reduction [i] would yield (91, 141, 8416)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 7 784033 396495 447534 889532 566092 658986 667838 970725 202204 128212 565575 949744 354485 015307 > 4¹⁴¹ [i]