MinT - Best Known (230−150, 230, s)-Nets in Base 3

Best Known (230−150, 230, s)-Nets in Base 3

(230−150, 230, 55)-Net over F₃ — Constructive and digital

Digital (80, 230, 55)-net over F₃, using

net from sequence [i] based on digital (80, 54)-sequence over F₃, using
- base reduction for sequences [i] based on digital (13, 54)-sequence over F₉, using
  - s-reduction based on digital (13, 63)-sequence over F₉, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₉ with g(F) = 13 and N(F) ≥ 64, using
      - a function field by GarcÃa and Quoos [i]

(230−150, 230, 84)-Net over F₃ — Digital

Digital (80, 230, 84)-net over F₃, using

t-expansion [i] based on digital (71, 230, 84)-net over F₃, using
- net from sequence [i] based on digital (71, 83)-sequence over F₃, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃ with g(F) = 71 and N(F) ≥ 84, using
    - algebraic function fields over â„¤₃ by Niederreiter/Xing [i]

(230−150, 230, 267)-Net over F₃ — Upper bound on s (digital)

There is no digital (80, 230, 268)-net over F₃, because

extracting embedded orthogonal array [i] would yield linear OA(3²³⁰, 268, F₃, 150) (dual of [268, 38, 151]-code), but
- residual code [i] would yield OA(3⁸⁰, 117, S₃, 50), but
  - the linear programming bound shows that MÂ â‰¥ 43 988919 336557 262180 077487 525672 393199 697139 692324 704712 213007 / 293033 908358 491110 749536 > 3⁸⁰ [i]

(230−150, 230, 348)-Net in Base 3 — Upper bound on s

There is no (80, 230, 349)-net in base 3, because

the generalized Rao bound for nets shows that 3^mÂ â‰¥ 64 068051 261469 023815 631109 321170 968872 006791 615932 289065 826207 461063 292609 158745 177383 251371 452681 748029 643435 > 3²³⁰ [i]