MinT - Best Known (231−150, 231, s)-Nets in Base 4

Best Known (231−150, 231, s)-Nets in Base 4

(231−150, 231, 104)-Net over F₄ — Constructive and digital

Digital (81, 231, 104)-net over F₄, using

t-expansion [i] based on digital (73, 231, 104)-net over F₄, using
- net from sequence [i] based on digital (73, 103)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 73 and N(F) ≥ 104, using
    - F₆ from the tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(231−150, 231, 129)-Net over F₄ — Digital

Digital (81, 231, 129)-net over F₄, using

net from sequence [i] based on digital (81, 128)-sequence over F₄, using
- Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 81 and N(F) ≥ 129, using
  - Drinfeld modules of rank 1 [i]

(231−150, 231, 625)-Net in Base 4 — Upper bound on s

There is no (81, 231, 626)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 12 936266 070917 002922 799912 966252 672070 753285 775031 474395 552838 802194 683299 423101 588208 639383 305173 542723 882910 449818 853377 311501 068251 741224 > 4²³¹ [i]