MinT - Best Known (52, 52+85, s)-Nets in Base 4

Best Known (52, 52+85, s)-Nets in Base 4

(52, 52+85, 66)-Net over F₄ — Constructive and digital

Digital (52, 137, 66)-net over F₄, using

t-expansion [i] based on digital (49, 137, 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]

(52, 52+85, 91)-Net over F₄ — Digital

Digital (52, 137, 91)-net over F₄, using

t-expansion [i] based on digital (50, 137, 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]

(52, 52+85, 456)-Net in Base 4 — Upper bound on s

There is no (52, 137, 457)-net in base 4, because

1 times m-reduction [i] would yield (52, 136, 457)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 7981 749694 673744 780820 368739 059728 744354 399524 061232 663868 363288 007419 577116 365440 > 4¹³⁶ [i]