MinT - Best Known (248−171, 248, s)-Nets in Base 4

Best Known (248−171, 248, s)-Nets in Base 4

(248−171, 248, 104)-Net over F₄ — Constructive and digital

Digital (77, 248, 104)-net over F₄, using

t-expansion [i] based on digital (73, 248, 104)-net over F₄, using
- net from sequence [i] based on digital (73, 103)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 73 and N(F) ≥ 104, using
    - F₆ from the tower of function fields by GarcÃa and Stichtenoth over F₄ [i]

(248−171, 248, 112)-Net over F₄ — Digital

Digital (77, 248, 112)-net over F₄, using

t-expansion [i] based on digital (73, 248, 112)-net over F₄, using
- net from sequence [i] based on digital (73, 111)-sequence over F₄, using
  - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 73 and N(F) ≥ 112, using
    - Drinfeld modules of rank 1 [i]

(248−171, 248, 540)-Net in Base 4 — Upper bound on s

There is no (77, 248, 541)-net in base 4, because

1 times m-reduction [i] would yield (77, 247, 541)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 57824 866591 671419 467975 662308 681712 068061 528429 682530 469256 542641 589878 006918 618357 520389 533152 661682 278384 966883 089944 498582 343300 748684 281307 104800 > 4²⁴⁷ [i]