MinT - Best Known (38, 38+21, s)-Nets in Base 81

Best Known (38, 38+21, s)-Nets in Base 81

(38, 38+21, 902)-Net over F₈₁ — Constructive and digital

Digital (38, 59, 902)-net over F₈₁, using

(u,Â u+v)-construction [i] based on
1. digital (8, 18, 246)-net over F₈₁, using
  - 1 times m-reduction [i] based on digital (8, 19, 246)-net over F₈₁, using
    - generalized (u,Â u+v)-construction [i] based on
      1. digital (0, 3, 82)-net over F₈₁, using
        net from sequence [i] based on digital (0, 81)-sequence over F₈₁, using
        generalized Faure sequence [i]
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₈₁ with g(F) = 0 and N(F) ≥ 82, using
        the rational function field F₈₁(x) [i]
        Niederreiter sequence [i]
      2. digital (0, 5, 82)-net over F₈₁, using
        net from sequence [i] based on digital (0, 81)-sequence over F₈₁ (see above)
      3. digital (0, 11, 82)-net over F₈₁, using
        net from sequence [i] based on digital (0, 81)-sequence over F₈₁ (see above)
2. digital (20, 41, 656)-net over F₈₁, using
  - net defined by OOA [i] based on linear OOA(81⁴¹, 656, F₈₁, 21, 21) (dual of [(656, 21), 13735, 22]-NRT-code), using
    - OOA 10-folding and stacking with additional row [i] based on linear OA(81⁴¹, 6561, F₈₁, 21) (dual of [6561, 6520, 22]-code), using
      - an extension C_e(20) of the primitive narrow-sense BCH-code C(I) with length 6560Â = 81²âˆ’1, defining interval IÂ =Â [1,20], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 21 [i]

(38, 38+21, 44294)-Net over F₈₁ — Digital

Digital (38, 59, 44294)-net over F₈₁, using

Gilbertâ€“VarÅ¡amov bound [i]

(38, 38+21, large)-Net in Base 81 — Upper bound on s

There is no (38, 59, large)-net in base 81, because

19 times m-reduction [i] would yield (38, 40, large)-net in base 81, but
- mutually orthogonal hypercube bound [i]