MinT - Best Known (20, 20+13, s)-Nets in Base 25

Best Known (20, 20+13, s)-Nets in Base 25

(20, 20+13, 234)-Net over F₂₅ — Constructive and digital

Digital (20, 33, 234)-net over F₂₅, using

generalized (u,Â u+v)-construction [i] based on
1. digital (0, 1, 26)-net over F₂₅, using
  - s-reduction based on digital (0, 1, s)-net over F₂₅ with arbitrarily large s, using
    - construction for strength kÂ =Â 1 [i]
2. digital (0, 1, 26)-net over F₂₅ (see above)
3. digital (0, 1, 26)-net over F₂₅ (see above)
4. digital (0, 2, 26)-net over F₂₅, using
  - kÂ =Â 2 construction [i]
5. digital (0, 2, 26)-net over F₂₅ (see above)
6. digital (0, 3, 26)-net over F₂₅, using
  - net from sequence [i] based on digital (0, 25)-sequence over F₂₅, using
    - generalized Faure sequence [i]
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂₅ with g(F) = 0 and N(F) ≥ 26, using
      - the rational function field F₂₅(x) [i]
    - Niederreiter sequence [i]
7. digital (0, 4, 26)-net over F₂₅, using
  - net from sequence [i] based on digital (0, 25)-sequence over F₂₅ (see above)
8. digital (0, 6, 26)-net over F₂₅, using
  - net from sequence [i] based on digital (0, 25)-sequence over F₂₅ (see above)
9. digital (0, 13, 26)-net over F₂₅, using
  - net from sequence [i] based on digital (0, 25)-sequence over F₂₅ (see above)

(20, 20+13, 1546)-Net over F₂₅ — Digital

Digital (20, 33, 1546)-net over F₂₅, using

Gilbertâ€“VarÅ¡amov bound [i]

(20, 20+13, 3561972)-Net in Base 25 — Upper bound on s

There is no (20, 33, 3561973)-net in base 25, because

1 times m-reduction [i] would yield (20, 32, 3561973)-net in base 25, but
- the generalized Rao bound for nets shows that 25^mÂ â‰¥ 542 101619 294956 770695 161503 882493 665177 330193 > 25³² [i]