MinT - Best Known (253−103, 253, s)-Nets in Base 4

Best Known (253−103, 253, s)-Nets in Base 4

(253−103, 253, 138)-Net over F₄ — Constructive and digital

Digital (150, 253, 138)-net over F₄, using

t-expansion [i] based on digital (149, 253, 138)-net over F₄, using
- 6 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]

(253−103, 253, 140)-Net in Base 4 — Constructive

(150, 253, 140)-net in base 4, using

(u,Â u+v)-construction [i] based on
1. (26, 77, 36)-net in base 4, using
  - net from sequence [i] based on (26, 35)-sequence in base 4, using
    - base expansion [i] based on digital (52, 35)-sequence over F₂, using
      - t-expansion [i] based on digital (51, 35)-sequence over F₂, using
        Niederreiterâ€“Xing sequence constructionÂ III based on the algebraic function field F/F₂ with g(F)Â =Â 41, N(F)Â =Â 32, 1 place with degree 2, and 3 places with degree 4 [i] based on function field F/F₂ with g(F) = 41 and N(F) ≥ 32, using an explicitly constructive algebraic function field [i]
2. digital (73, 176, 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]

(253−103, 253, 340)-Net over F₄ — Digital

Digital (150, 253, 340)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(253−103, 253, 6204)-Net in Base 4 — Upper bound on s

There is no (150, 253, 6205)-net in base 4, because

1 times m-reduction [i] would yield (150, 252, 6205)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 52 650684 932926 902445 003886 546993 170347 068946 042799 787287 967969 680346 847809 678251 445318 748058 593244 115863 048183 577538 179558 571788 110708 148464 312023 732820 > 4²⁵² [i]