MinT - Best Known (65, 65+81, s)-Nets in Base 4

Best Known (65, 65+81, s)-Nets in Base 4

(65, 65+81, 66)-Net over F₄ — Constructive and digital

Digital (65, 146, 66)-net over F₄, using

t-expansion [i] based on digital (49, 146, 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]

(65, 65+81, 99)-Net over F₄ — Digital

Digital (65, 146, 99)-net over F₄, using

t-expansion [i] based on digital (61, 146, 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]

(65, 65+81, 767)-Net in Base 4 — Upper bound on s

There is no (65, 146, 768)-net in base 4, because

1 times m-reduction [i] would yield (65, 145, 768)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 2013 372044 493034 477703 430763 989629 137909 221437 263982 234088 160938 123312 002141 076171 740953 > 4¹⁴⁵ [i]