MinT - Best Known (171−113, 171, s)-Nets in Base 4

Best Known (171−113, 171, s)-Nets in Base 4

(171−113, 171, 66)-Net over F₄ — Constructive and digital

Digital (58, 171, 66)-net over F₄, using

t-expansion [i] based on digital (49, 171, 66)-net over F₄, using
- net from sequence [i] based on digital (49, 65)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 49 and N(F) ≥ 66, using
    - T₆ from the second tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(171−113, 171, 91)-Net over F₄ — Digital

Digital (58, 171, 91)-net over F₄, using

t-expansion [i] based on digital (50, 171, 91)-net over F₄, using
- net from sequence [i] based on digital (50, 90)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 50 and N(F) ≥ 91, using
    - a curve from the manYPoints database [i]

(171−113, 171, 442)-Net in Base 4 — Upper bound on s

There is no (58, 171, 443)-net in base 4, because

1 times m-reduction [i] would yield (58, 170, 443)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 2 495763 999349 102812 023654 236597 016635 861618 736233 276692 212755 250910 451303 757904 179601 362691 778864 429585 > 4¹⁷⁰ [i]