MinT - Best Known (68, 68+95, s)-Nets in Base 4

Best Known (68, 68+95, s)-Nets in Base 4

(68, 68+95, 66)-Net over F₄ — Constructive and digital

Digital (68, 163, 66)-net over F₄, using

t-expansion [i] based on digital (49, 163, 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]

(68, 68+95, 99)-Net over F₄ — Digital

Digital (68, 163, 99)-net over F₄, using

t-expansion [i] based on digital (61, 163, 99)-net over F₄, using
- net from sequence [i] based on digital (61, 98)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 61 and N(F) ≥ 99, using
    - Drinfeld modules of rank 1 [i]

(68, 68+95, 690)-Net in Base 4 — Upper bound on s

There is no (68, 163, 691)-net in base 4, because

1 times m-reduction [i] would yield (68, 162, 691)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 36 099779 862936 739910 167488 075178 484458 647605 893621 271348 097648 394924 037240 240349 099525 979913 129920 > 4¹⁶² [i]