MinT - Best Known (167−35, 167, s)-Nets in Base 4

Best Known (167−35, 167, s)-Nets in Base 4

(167−35, 167, 1055)-Net over F₄ — Constructive and digital

Digital (132, 167, 1055)-net over F₄, using

(u,Â u+v)-construction [i] based on
1. digital (10, 27, 27)-net over F₄, using
  - net from sequence [i] based on digital (10, 26)-sequence over F₄, using
    - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₄ with g(F) = 10 and N(F) ≥ 27, using
      - an explicitly constructive algebraic function field [i]
2. digital (105, 140, 1028)-net over F₄, using
  - trace code for nets [i] based on digital (0, 35, 257)-net over F₂₅₆, using
    - net from sequence [i] based on digital (0, 256)-sequence over F₂₅₆, using
      - generalized Faure sequence [i]
      - Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₂₅₆ with g(F) = 0 and N(F) ≥ 257, using
        the rational function field F₂₅₆(x) [i]
      - Niederreiter sequence [i]

(167−35, 167, 4291)-Net over F₄ — Digital

Digital (132, 167, 4291)-net over F₄, using

embedding of OOA with Gilbertâ€“VarÅ¡amov bound [i] based on linear OA(4¹⁶⁷, 4291, F₄, 35) (dual of [4291, 4124, 36]-code), using
- 179 step VarÅ¡amovâ€“Edel lengthening with (r_i)Â = (3, 1, 0, 0, 1, 5 times 0, 1, 9 times 0, 1, 17 times 0, 1, 28 times 0, 1, 44 times 0, 1, 66 times 0) [i] based on linear OA(4¹⁵⁷, 4102, F₄, 35) (dual of [4102, 3945, 36]-code), using
  - constructionÂ X applied to C_e(34) âŠ‚ C_e(33) [i] based on
    1. linear OA(4¹⁵⁷, 4096, F₄, 35) (dual of [4096, 3939, 36]-code), using an extension C_e(34) of the primitive narrow-sense BCH-code C(I) with length 4095Â = 4⁶âˆ’1, defining interval IÂ =Â [1,34], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 35 [i]
    2. linear OA(4¹⁵¹, 4096, F₄, 34) (dual of [4096, 3945, 35]-code), using an extension C_e(33) of the primitive narrow-sense BCH-code C(I) with length 4095Â = 4⁶âˆ’1, defining interval IÂ =Â [1,33], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 34 [i]
    3. linear OA(4⁰, 6, F₄, 0) (dual of [6, 6, 1]-code), using
      - discarding factors / shortening the dual code based on linear OA(4⁰, s, F₄, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
        OA with only one run / dual of code without redundancy [i]

(167−35, 167, 1810336)-Net in Base 4 — Upper bound on s

There is no (132, 167, 1810337)-net in base 4, because

1 times m-reduction [i] would yield (132, 166, 1810337)-net in base 4, but
- the generalized Rao bound for nets shows that 4^mÂ â‰¥ 8749 008160 629922 570244 916203 686142 942742 632422 097019 602603 984922 889977 624624 631186 921950 647884 238680 > 4¹⁶⁶ [i]