MinT - Best Known (168−90, 168, s)-Nets in Base 3

Best Known (168−90, 168, s)-Nets in Base 3

(168−90, 168, 56)-Net over F₃ — Constructive and digital

Digital (78, 168, 56)-net over F₃, using

6 times m-reduction [i] based on digital (78, 174, 56)-net over F₃, using
- (u,Â u+v)-construction [i] based on
  1. digital (15, 63, 28)-net over F₃, using
    - net from sequence [i] based on digital (15, 27)-sequence over F₃, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃ with g(F) = 15 and N(F) ≥ 28, using
        an explicitly constructive algebraic function field [i]
  2. digital (15, 111, 28)-net over F₃, using
    - net from sequence [i] based on digital (15, 27)-sequence over F₃ (see above)

(168−90, 168, 84)-Net over F₃ — Digital

Digital (78, 168, 84)-net over F₃, using

t-expansion [i] based on digital (71, 168, 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]

(168−90, 168, 489)-Net in Base 3 — Upper bound on s

There is no (78, 168, 490)-net in base 3, because

the generalized Rao bound for nets shows that 3^mÂ â‰¥ 148 567648 561213 294344 367511 193941 067111 841036 410731 112054 012289 179995 166447 685149 > 3¹⁶⁸ [i]