MinT - Best Known (248−143, 248, s)-Nets in Base 3

Best Known (248−143, 248, s)-Nets in Base 3

(248−143, 248, 72)-Net over F₃ — Constructive and digital

Digital (105, 248, 72)-net over F₃, using

net from sequence [i] based on digital (105, 71)-sequence over F₃, using
- base reduction for sequences [i] based on digital (17, 71)-sequence over F₉, using
  - s-reduction based on digital (17, 73)-sequence over F₉, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₉ with g(F) = 17 and N(F) ≥ 74, using
      - a function field by GarcÃa and Quoos [i]

(248−143, 248, 104)-Net over F₃ — Digital

Digital (105, 248, 104)-net over F₃, using

t-expansion [i] based on digital (102, 248, 104)-net over F₃, using
- net from sequence [i] based on digital (102, 103)-sequence over F₃, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃ with g(F) = 102 and N(F) ≥ 104, using
    - algebraic function fields over â„¤₃ by Niederreiter/Xing [i]

(248−143, 248, 555)-Net in Base 3 — Upper bound on s

There is no (105, 248, 556)-net in base 3, because

1 times m-reduction [i] would yield (105, 247, 556)-net in base 3, but
- the generalized Rao bound for nets shows that 3^mÂ â‰¥ 7421 951929 558862 166356 264642 597482 498488 667894 047848 801272 799143 602044 411406 606925 030077 540739 527909 197264 356088 574417 > 3²⁴⁷ [i]