MinT - Best Known (147−87, 147, s)-Nets in Base 4

Best Known (147−87, 147, s)-Nets in Base 4

(147−87, 147, 66)-Net over F₄ — Constructive and digital

Digital (60, 147, 66)-net over F₄, using

t-expansion [i] based on digital (49, 147, 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]

(147−87, 147, 91)-Net over F₄ — Digital

Digital (60, 147, 91)-net over F₄, using

t-expansion [i] based on digital (50, 147, 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]

(147−87, 147, 588)-Net in Base 4 — Upper bound on s

There is no (60, 147, 589)-net in base 4, because

1 times m-reduction [i] would yield (60, 146, 589)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 8235 459816 368300 243986 079944 239114 782827 732097 125749 992931 737891 254724 989840 293865 157320 > 4¹⁴⁶ [i]