MinT - Best Known (241−91, 241, s)-Nets in Base 4

Best Known (241−91, 241, s)-Nets in Base 4

(241−91, 241, 140)-Net over F₄ — Constructive and digital

Digital (150, 241, 140)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (2, 47, 10)-net over F₄, using
  - net from sequence [i] based on digital (2, 9)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 2 and N(F) ≥ 10, using
      - an explicitly constructive algebraic function field [i]
2. digital (103, 194, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 97, 65)-net over F₁₆, using
    - net from sequence [i] based on digital (6, 64)-sequence over F₁₆, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₁₆ with g(F) = 6 and N(F) ≥ 65, using
        the Hermitian function field over F₁₆ [i]

(241−91, 241, 152)-Net in Base 4 — Constructive

(150, 241, 152)-net in base 4, using

4¹ times duplication [i] based on (149, 240, 152)-net in base 4, using
- trace code for nets [i] based on (29, 120, 76)-net in base 16, using
  - base change [i] based on digital (5, 96, 76)-net over F₃₂, using
    - net from sequence [i] based on digital (5, 75)-sequence over F₃₂, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 5 and N(F) ≥ 76, using
        a function field by SÃ©mirat [i]

(241−91, 241, 418)-Net over F₄ — Digital

Digital (150, 241, 418)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(241−91, 241, 9513)-Net in Base 4 — Upper bound on s

There is no (150, 241, 9514)-net in base 4, because

1 times m-reduction [i] would yield (150, 240, 9514)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 3 124140 308888 757810 899289 542754 103846 723293 001670 851753 532796 933047 097417 972442 513012 155816 856197 748048 301724 479387 143385 297511 696885 866586 445504 > 4²⁴⁰ [i]