MinT - Best Known (189−134, 189, s)-Nets in Base 4

Best Known (189−134, 189, s)-Nets in Base 4

(189−134, 189, 66)-Net over F₄ — Constructive and digital

Digital (55, 189, 66)-net over F₄, using

t-expansion [i] based on digital (49, 189, 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]

(189−134, 189, 91)-Net over F₄ — Digital

Digital (55, 189, 91)-net over F₄, using

t-expansion [i] based on digital (50, 189, 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]

(189−134, 189, 376)-Net in Base 4 — Upper bound on s

There is no (55, 189, 377)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 680573 400252 950322 253477 480993 246078 706786 692804 300287 140542 017791 059574 831215 137942 521205 975395 518098 903084 449080 > 4¹⁸⁹ [i]