MinT - Best Known (57, 196, s)-Nets in Base 4

Best Known (57, 196, s)-Nets in Base 4

(57, 196, 66)-Net over F₄ — Constructive and digital

Digital (57, 196, 66)-net over F₄, using

t-expansion [i] based on digital (49, 196, 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]

(57, 196, 91)-Net over F₄ — Digital

Digital (57, 196, 91)-net over F₄, using

t-expansion [i] based on digital (50, 196, 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]

(57, 196, 390)-Net in Base 4 — Upper bound on s

There is no (57, 196, 391)-net in base 4, because

1 times m-reduction [i] would yield (57, 195, 391)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 2825 046710 564974 710719 304688 413986 755250 522898 483143 751890 048712 938048 465763 868234 233629 773565 799972 809271 369349 214332 > 4¹⁹⁵ [i]