MinT - Best Known (21, 21+71, s)-Nets in Base 25

Best Known (21, 21+71, s)-Nets in Base 25

(21, 21+71, 148)-Net over F₂₅ — Constructive and digital

Digital (21, 92, 148)-net over F₂₅, using

t-expansion [i] based on digital (19, 92, 148)-net over F₂₅, using
- net from sequence [i] based on digital (19, 147)-sequence over F₂₅, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂₅ with g(F) = 19 and N(F) ≥ 148, using
    - a function field by GarcÃa and Quoos [i]

(21, 21+71, 171)-Net over F₂₅ — Digital

Digital (21, 92, 171)-net over F₂₅, using

t-expansion [i] based on digital (20, 92, 171)-net over F₂₅, using
- net from sequence [i] based on digital (20, 170)-sequence over F₂₅, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂₅ with g(F) = 20 and N(F) ≥ 171, using
    - an algebraic function field by Teo [i]

(21, 21+71, 2480)-Net in Base 25 — Upper bound on s

There is no (21, 92, 2481)-net in base 25, because

1 times m-reduction [i] would yield (21, 91, 2481)-net in base 25, but
- the generalized Rao bound for nets shows that 25^mÂ â‰¥ 16 503677 567372 177557 964422 419790 248540 407300 718896 461762 890551 451383 477389 717486 029348 889205 782888 882979 470712 695872 182376 612745 > 25⁹¹ [i]