MinT - Best Known (90−47, 90, s)-Nets in Base 4

Best Known (90−47, 90, s)-Nets in Base 4

(90−47, 90, 56)-Net over F₄ — Constructive and digital

Digital (43, 90, 56)-net over F₄, using

t-expansion [i] based on digital (33, 90, 56)-net over F₄, using
- net from sequence [i] based on digital (33, 55)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 33 and N(F) ≥ 56, using
    - F₅ from the tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(90−47, 90, 75)-Net over F₄ — Digital

Digital (43, 90, 75)-net over F₄, using

t-expansion [i] based on digital (40, 90, 75)-net over F₄, using
- net from sequence [i] based on digital (40, 74)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 40 and N(F) ≥ 75, using
    - Drinfeld modules of rank 1 [i]

(90−47, 90, 653)-Net in Base 4 — Upper bound on s

There is no (43, 90, 654)-net in base 4, because

1 times m-reduction [i] would yield (43, 89, 654)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 396063 721598 350603 181886 532061 367209 807246 982512 309152 > 4⁸⁹ [i]