MinT - Best Known (248−96, 248, s)-Nets in Base 4

Best Known (248−96, 248, s)-Nets in Base 4

(248−96, 248, 138)-Net over F₄ — Constructive and digital

Digital (152, 248, 138)-net over F₄, using

t-expansion [i] based on digital (149, 248, 138)-net over F₄, using
- 11 times m-reduction [i] based on digital (149, 259, 138)-net over F₄, using
  - (u,Â u+v)-construction [i] based on
    1. digital (21, 76, 34)-net over F₄, using
      - net from sequence [i] based on digital (21, 33)-sequence over F₄, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 21 and N(F) ≥ 34, using
        T₅ from the second tower of function fields by GarcÃa and Stichtenoth over F₄ [i]
    2. digital (73, 183, 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]

(248−96, 248, 147)-Net in Base 4 — Constructive

(152, 248, 147)-net in base 4, using

2 times m-reduction [i] based on (152, 250, 147)-net in base 4, using
- (u,Â u+v)-construction [i] based on
  1. (30, 79, 43)-net in base 4, using
    - net from sequence [i] based on (30, 42)-sequence in base 4, using
      - base expansion [i] based on digital (60, 42)-sequence over F₂, using
        t-expansion [i] based on digital (59, 42)-sequence over F₂, using
        Niederreiterâ€“Xing sequence constructionÂ III based on the algebraic function field F/F₂ with g(F)Â =Â 54, N(F)Â =Â 42, and 1 place with degree 6 [i] based on function field F/F₂ with g(F) = 54 and N(F) ≥ 42, 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]

(248−96, 248, 394)-Net over F₄ — Digital

Digital (152, 248, 394)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(248−96, 248, 8020)-Net in Base 4 — Upper bound on s

There is no (152, 248, 8021)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 205634 251024 879855 409915 557022 073616 616638 060048 593732 847555 758069 093640 677938 241911 046645 421131 581409 935329 844577 771558 559701 023869 354715 876140 801906 > 4²⁴⁸ [i]