MinT - Best Known (121−85, 121, s)-Nets in Base 4

Best Known (121−85, 121, s)-Nets in Base 4

(121−85, 121, 56)-Net over F₄ — Constructive and digital

Digital (36, 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]

(121−85, 121, 65)-Net over F₄ — Digital

Digital (36, 121, 65)-net over F₄, using

t-expansion [i] based on digital (33, 121, 65)-net over F₄, using
- net from sequence [i] based on digital (33, 64)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 33 and N(F) ≥ 65, using
    - Drinfeld modules of rank 1 [i]

(121−85, 121, 255)-Net in Base 4 — Upper bound on s

There is no (36, 121, 256)-net in base 4, because

1 times m-reduction [i] would yield (36, 120, 256)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 1 778145 173025 657528 987466 066476 035420 495006 316371 334594 772315 963328 069257 > 4¹²⁰ [i]