MinT - Best Known (160−105, 160, s)-Nets in Base 4

Best Known (160−105, 160, s)-Nets in Base 4

(160−105, 160, 66)-Net over F₄ — Constructive and digital

Digital (55, 160, 66)-net over F₄, using

t-expansion [i] based on digital (49, 160, 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]

(160−105, 160, 91)-Net over F₄ — Digital

Digital (55, 160, 91)-net over F₄, using

t-expansion [i] based on digital (50, 160, 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]

(160−105, 160, 426)-Net in Base 4 — Upper bound on s

There is no (55, 160, 427)-net in base 4, because

1 times m-reduction [i] would yield (55, 159, 427)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 596894 971243 882609 669112 047620 251635 453821 244684 284383 406605 700081 566147 595013 904474 659172 159920 > 4¹⁵⁹ [i]