MinT - Best Known (156−104, 156, s)-Nets in Base 3

Best Known (156−104, 156, s)-Nets in Base 3

(156−104, 156, 48)-Net over F₃ — Constructive and digital

Digital (52, 156, 48)-net over F₃, using

t-expansion [i] based on digital (45, 156, 48)-net over F₃, using
- net from sequence [i] based on digital (45, 47)-sequence over F₃, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃ with g(F) = 45 and N(F) ≥ 48, using
    - an explicitly constructive algebraic function field [i]

(156−104, 156, 64)-Net over F₃ — Digital

Digital (52, 156, 64)-net over F₃, using

t-expansion [i] based on digital (49, 156, 64)-net over F₃, using
- net from sequence [i] based on digital (49, 63)-sequence over F₃, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃ with g(F) = 49 and N(F) ≥ 64, using
    - a curve from the manYPoints database [i]

(156−104, 156, 174)-Net over F₃ — Upper bound on s (digital)

There is no digital (52, 156, 175)-net over F₃, because

2 times m-reduction [i] would yield digital (52, 154, 175)-net over F₃, but
- extracting embedded orthogonal array [i] would yield linear OA(3¹⁵⁴, 175, F₃, 102) (dual of [175, 21, 103]-code), but
  - residual code [i] would yield OA(3⁵², 72, S₃, 34), but
    - the linear programming bound shows that MÂ â‰¥ 23373 085764 731132 483065 978750 735767 / 2987 457005 > 3⁵² [i]

(156−104, 156, 225)-Net in Base 3 — Upper bound on s

There is no (52, 156, 226)-net in base 3, because

the generalized Rao bound for nets shows that 3^mÂ â‰¥ 313 352222 562065 758795 046923 247114 119546 422880 989980 091485 803503 557224 830729 > 3¹⁵⁶ [i]