MinT - Best Known (67, 67+126, s)-Nets in Base 4

Best Known (67, 67+126, s)-Nets in Base 4

(67, 67+126, 66)-Net over F₄ — Constructive and digital

Digital (67, 193, 66)-net over F₄, using

t-expansion [i] based on digital (49, 193, 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]

(67, 67+126, 99)-Net over F₄ — Digital

Digital (67, 193, 99)-net over F₄, using

t-expansion [i] based on digital (61, 193, 99)-net over F₄, using
- net from sequence [i] based on digital (61, 98)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 61 and N(F) ≥ 99, using
    - Drinfeld modules of rank 1 [i]

(67, 67+126, 515)-Net in Base 4 — Upper bound on s

There is no (67, 193, 516)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 158 993593 491776 197670 215677 010163 952345 278834 035532 435780 000551 401322 654168 704777 818706 640442 867639 509275 587764 447360 > 4¹⁹³ [i]