MinT - Best Known (196−131, 196, s)-Nets in Base 4

Best Known (196−131, 196, s)-Nets in Base 4

(196−131, 196, 66)-Net over F₄ — Constructive and digital

Digital (65, 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]

(196−131, 196, 99)-Net over F₄ — Digital

Digital (65, 196, 99)-net over F₄, using

t-expansion [i] based on digital (61, 196, 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]

(196−131, 196, 482)-Net in Base 4 — Upper bound on s

There is no (65, 196, 483)-net in base 4, because

1 times m-reduction [i] would yield (65, 195, 483)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 2656 710234 071723 540189 927217 174162 523708 490743 852855 960725 758427 467916 273776 552283 565705 398477 505661 370754 261722 214498 > 4¹⁹⁵ [i]