MinT - Best Known (59, 230, s)-Nets in Base 4

Best Known (59, 230, s)-Nets in Base 4

Digital (59, 230, 66)-net over F₄, using

t-expansion [i] based on digital (49, 230, 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]

Digital (59, 230, 91)-net over F₄, using

t-expansion [i] based on digital (50, 230, 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]

There is no digital (59, 230, 272)-net over F₄, because

3 times m-reduction [i] would yield digital (59, 227, 272)-net over F₄, but
- extracting embedded orthogonal array [i] would yield linear OA(4²²⁷, 272, F₄, 168) (dual of [272, 45, 169]-code), but
  - residual code [i] would yield OA(4⁵⁹, 103, S₄, 42), but
    - the linear programming bound shows that MÂ â‰¥ 20 209278 630007 954817 311657 592716 406577 471235 077989 401051 636395 089582 131646 221319 183990 947510 747136 / 59 997456 042944 145499 206694 218235 767252 553003 337898 939171 700875 > 4⁵⁹ [i]

There is no (59, 230, 387)-net in base 4, because

1 times m-reduction [i] would yield (59, 229, 387)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 818493 655002 078853 376103 886399 680184 797871 950791 974684 214277 786623 061710 222311 343518 321208 016181 689198 886510 523288 803168 182720 143111 707072 > 4²²⁹ [i]