MinT - Best Known (191−124, 191, s)-Nets in Base 4

Best Known (191−124, 191, s)-Nets in Base 4

(191−124, 191, 66)-Net over F₄ — Constructive and digital

Digital (67, 191, 66)-net over F₄, using

t-expansion [i] based on digital (49, 191, 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]

(191−124, 191, 99)-Net over F₄ — Digital

Digital (67, 191, 99)-net over F₄, using

t-expansion [i] based on digital (61, 191, 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]

(191−124, 191, 521)-Net in Base 4 — Upper bound on s

There is no (67, 191, 522)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 10 432494 337949 271765 801524 413445 474303 008398 436227 482658 709566 932210 826663 162651 244679 840438 994518 661205 129801 788160 > 4¹⁹¹ [i]