MinT - Best Known (202−139, 202, s)-Nets in Base 4

Best Known (202−139, 202, s)-Nets in Base 4

(202−139, 202, 66)-Net over F₄ — Constructive and digital

Digital (63, 202, 66)-net over F₄, using

t-expansion [i] based on digital (49, 202, 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]

(202−139, 202, 99)-Net over F₄ — Digital

Digital (63, 202, 99)-net over F₄, using

t-expansion [i] based on digital (61, 202, 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]

(202−139, 202, 446)-Net in Base 4 — Upper bound on s

There is no (63, 202, 447)-net in base 4, because

1 times m-reduction [i] would yield (63, 201, 447)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 10 390506 508613 987891 652269 551521 118910 848991 525363 057082 352288 554632 027247 806073 509261 753984 536899 542746 458977 308705 947772 > 4²⁰¹ [i]