MinT - Best Known (228−91, 228, s)-Nets in Base 4

Best Known (228−91, 228, s)-Nets in Base 4

(228−91, 228, 137)-Net over F₄ — Constructive and digital

Digital (137, 228, 137)-net over F₄, using

7 times m-reduction [i] based on digital (137, 235, 137)-net over F₄, using
- (u,Â u+v)-construction [i] based on
  1. digital (15, 64, 33)-net over F₄, using
    - net from sequence [i] based on digital (15, 32)-sequence over F₄, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 15 and N(F) ≥ 33, using
        an explicitly constructive algebraic function field [i]
  2. digital (73, 171, 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]

(228−91, 228, 331)-Net over F₄ — Digital

Digital (137, 228, 331)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(228−91, 228, 6362)-Net in Base 4 — Upper bound on s

There is no (137, 228, 6363)-net in base 4, because

1 times m-reduction [i] would yield (137, 227, 6363)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 46826 751414 489773 321634 989312 641207 706235 439459 748513 525877 497619 002208 988728 089128 615734 160451 385151 459164 983610 082184 168949 733773 018736 > 4²²⁷ [i]