MinT - Best Known (147, 227, s)-Nets in Base 4

Best Known (147, 227, s)-Nets in Base 4

(147, 227, 163)-Net over F₄ — Constructive and digital

Digital (147, 227, 163)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (15, 55, 33)-net over F₄, using
  - net from sequence [i] based on digital (15, 32)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 15 and N(F) ≥ 33, using
      - an explicitly constructive algebraic function field [i]
2. digital (92, 172, 130)-net over F₄, using
  - trace code for nets [i] based on digital (6, 86, 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]

(147, 227, 208)-Net in Base 4 — Constructive

(147, 227, 208)-net in base 4, using

3 times m-reduction [i] based on (147, 230, 208)-net in base 4, using
- trace code for nets [i] based on (32, 115, 104)-net in base 16, using
  - base change [i] based on digital (9, 92, 104)-net over F₃₂, using
    - net from sequence [i] based on digital (9, 103)-sequence over F₃₂, using
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₃₂ with g(F) = 9 and N(F) ≥ 104, using
        a function field by SÃ©mirat [i]

(147, 227, 505)-Net over F₄ — Digital

Digital (147, 227, 505)-net over F₄, using

Gilbertâ€“VarÅ¡amov bound [i]

(147, 227, 13687)-Net in Base 4 — Upper bound on s

There is no (147, 227, 13688)-net in base 4, because

the generalized Rao bound for nets shows that 4^mÂ â‰¥ 46600 072589 814066 747768 796068 960400 441711 393811 224079 339154 267428 270432 782493 056462 677202 076819 718184 280226 797883 642979 728615 961798 786570 > 4²²⁷ [i]