MinT - Best Known (189−129, 189, s)-Nets in Base 4

Best Known (189−129, 189, s)-Nets in Base 4

(189−129, 189, 66)-Net over F₄ — Constructive and digital

Digital (60, 189, 66)-net over F₄, using

t-expansion [i] based on digital (49, 189, 66)-net over F₄, using
- net from sequence [i] based on digital (49, 65)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 49 and N(F) ≥ 66, using
    - T₆ from the second tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(189−129, 189, 91)-Net over F₄ — Digital

Digital (60, 189, 91)-net over F₄, using

t-expansion [i] based on digital (50, 189, 91)-net over F₄, using
- net from sequence [i] based on digital (50, 90)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 50 and N(F) ≥ 91, using
    - a curve from the manYPoints database [i]

(189−129, 189, 431)-Net in Base 4 — Upper bound on s

There is no (60, 189, 432)-net in base 4, because

1 times m-reduction [i] would yield (60, 188, 432)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 154957 248090 092793 604245 691989 219303 767432 453435 557685 305026 510891 390953 367117 885496 320924 916910 253879 090221 048470 > 4¹⁸⁸ [i]