MinT - Best Known (245−166, 245, s)-Nets in Base 3

Best Known (245−166, 245, s)-Nets in Base 3

(245−166, 245, 54)-Net over F₃ — Constructive and digital

Digital (79, 245, 54)-net over F₃, using

net from sequence [i] based on digital (79, 53)-sequence over F₃, using
- base reduction for sequences [i] based on digital (13, 53)-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]

(245−166, 245, 84)-Net over F₃ — Digital

Digital (79, 245, 84)-net over F₃, using

t-expansion [i] based on digital (71, 245, 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]

(245−166, 245, 245)-Net over F₃ — Upper bound on s (digital)

There is no digital (79, 245, 246)-net over F₃, because

4 times m-reduction [i] would yield digital (79, 241, 246)-net over F₃, but
- extracting embedded orthogonal array [i] would yield linear OA(3²⁴¹, 246, F₃, 162) (dual of [246, 5, 163]-code), but
  - Griesmer bound [i]

(245−166, 245, 329)-Net in Base 3 — Upper bound on s

There is no (79, 245, 330)-net in base 3, because

the generalized Rao bound for nets shows that 3^mÂ â‰¥ 823 215646 270197 385108 472045 233120 344563 861476 235522 405603 824608 413075 345549 462320 352134 148095 249176 686813 533799 660945 > 3²⁴⁵ [i]