MinT - Best Known (254−102, 254, s)-Nets in Base 4

Best Known (254−102, 254, s)-Nets in Base 4

(254−102, 254, 138)-Net over F₄ — Constructive and digital

Digital (152, 254, 138)-net over F₄, using

t-expansion [i] based on digital (149, 254, 138)-net over F₄, using
- 5 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]

(254−102, 254, 146)-Net in Base 4 — Constructive

(152, 254, 146)-net in base 4, using

2 times m-reduction [i] based on (152, 256, 146)-net in base 4, using
- (u,Â u+v)-construction [i] based on
  1. (27, 79, 42)-net in base 4, using
    - net from sequence [i] based on (27, 41)-sequence in base 4, using
      - base expansion [i] based on digital (54, 41)-sequence over F₂, using
        Niederreiterâ€“Xing sequence constructionÂ II/III [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, 177, 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]

(254−102, 254, 357)-Net over F₄ — Digital

Digital (152, 254, 357)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(254−102, 254, 6553)-Net in Base 4 — Upper bound on s

There is no (152, 254, 6554)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 842 382776 267087 882636 410445 814558 011181 862192 809249 789633 930543 244141 499792 950110 265108 402261 840368 469947 053681 840695 971391 087014 239628 609520 515005 919664 > 4²⁵⁴ [i]