MinT - Best Known (21, 21+49, s)-Nets in Base 16

Best Known (21, 21+49, s)-Nets in Base 16

(21, 21+49, 65)-Net over F₁₆ — Constructive and digital

Digital (21, 70, 65)-net over F₁₆, using

t-expansion [i] based on digital (6, 70, 65)-net over F₁₆, using
- net from sequence [i] based on digital (6, 64)-sequence over F₁₆, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₆ with g(F) = 6 and N(F) ≥ 65, using
    - the Hermitian function field over F₁₆ [i]

(21, 21+49, 98)-Net in Base 16 — Constructive

(21, 70, 98)-net in base 16, using

base change [i] based on digital (7, 56, 98)-net over F₃₂, using
- net from sequence [i] based on digital (7, 97)-sequence over F₃₂, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 7 and N(F) ≥ 98, using
    - a function field by SÃ©mirat [i]

(21, 21+49, 129)-Net over F₁₆ — Digital

Digital (21, 70, 129)-net over F₁₆, using

t-expansion [i] based on digital (19, 70, 129)-net over F₁₆, using
- net from sequence [i] based on digital (19, 128)-sequence over F₁₆, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₆ with g(F) = 19 and N(F) ≥ 129, using
    - a curve from the manYPoints database [i]

(21, 21+49, 1879)-Net in Base 16 — Upper bound on s

There is no (21, 70, 1880)-net in base 16, because

1 times m-reduction [i] would yield (21, 69, 1880)-net in base 16, but
- the generalized Rao bound for nets shows that 16^mÂ â‰¥ 121765 249977 956298 393962 939597 518258 573451 828723 974976 736372 347051 156453 696091 665176 > 16⁶⁹ [i]