MinT - Best Known (121−83, 121, s)-Nets in Base 4

Best Known (121−83, 121, s)-Nets in Base 4

(121−83, 121, 56)-Net over F₄ — Constructive and digital

Digital (38, 121, 56)-net over F₄, using

t-expansion [i] based on digital (33, 121, 56)-net over F₄, using
- net from sequence [i] based on digital (33, 55)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 33 and N(F) ≥ 56, using
    - F₅ from the tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(121−83, 121, 66)-Net over F₄ — Digital

Digital (38, 121, 66)-net over F₄, using

t-expansion [i] based on digital (37, 121, 66)-net over F₄, using
- net from sequence [i] based on digital (37, 65)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 37 and N(F) ≥ 66, using
    - Drinfeld modules of rank 1 [i]

(121−83, 121, 278)-Net in Base 4 — Upper bound on s

There is no (38, 121, 279)-net in base 4, because

1 times m-reduction [i] would yield (38, 120, 279)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 1 821691 831452 612040 236926 942957 164982 031109 404186 769276 546247 986906 758304 > 4¹²⁰ [i]