MinT - Best Known (142, 158, s)-Nets in Base 8

Best Known (142, 158, s)-Nets in Base 8

(142, 158, 2105343)-Net over F₈ — Constructive and digital

Digital (142, 158, 2105343)-net over F₈, using

(u,Â u+v)-construction [i] based on
1. digital (28, 36, 8193)-net over F₈, using
  - net defined by OOA [i] based on linear OOA(8³⁶, 8193, F₈, 8, 8) (dual of [(8193, 8), 65508, 9]-NRT-code), using
    - OA 4-folding and stacking [i] based on linear OA(8³⁶, 32772, F₈, 8) (dual of [32772, 32736, 9]-code), using
      - discarding factors / shortening the dual code based on linear OA(8³⁶, 32773, F₈, 8) (dual of [32773, 32737, 9]-code), using
        1 times truncation [i] based on linear OA(8³⁷, 32774, F₈, 9) (dual of [32774, 32737, 10]-code), using
        constructionÂ X applied to C_e(8) âŠ‚ C_e(6) [i] based on
        linear OA(8³⁶, 32768, F₈, 9) (dual of [32768, 32732, 10]-code), using an extension C_e(8) of the primitive narrow-sense BCH-code C(I) with length 32767Â = 8⁵âˆ’1, defining interval IÂ =Â [1,8], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 9 [i]
        linear OA(8³¹, 32768, F₈, 7) (dual of [32768, 32737, 8]-code), using an extension C_e(6) of the primitive narrow-sense BCH-code C(I) with length 32767Â = 8⁵âˆ’1, defining interval IÂ =Â [1,6], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 7 [i]
        linear OA(8¹, 6, F₈, 1) (dual of [6, 5, 2]-code), using
        discarding factors / shortening the dual code based on linear OA(8¹, s, F₈, 1) (dual of [s, s−1, 2]-code) with arbitrarily large s, using
        parity-check code [i]
2. digital (106, 122, 2097150)-net over F₈, using
  - net defined by OOA [i] based on linear OOA(8¹²², 2097150, F₈, 18, 16) (dual of [(2097150, 18), 37748578, 17]-NRT-code), using
    - OOA 4-folding and stacking with additional row [i] based on linear OOA(8¹²², 8388601, F₈, 2, 16) (dual of [(8388601, 2), 16777080, 17]-NRT-code), using
      - discarding factors / shortening the dual code based on linear OOA(8¹²², 8388602, F₈, 2, 16) (dual of [(8388602, 2), 16777082, 17]-NRT-code), using
        trace code [i] based on linear OOA(64⁶¹, 4194301, F₆₄, 2, 16) (dual of [(4194301, 2), 8388541, 17]-NRT-code), using
        OOA 2-folding [i] based on linear OA(64⁶¹, 8388602, F₆₄, 16) (dual of [8388602, 8388541, 17]-code), using
        discarding factors / shortening the dual code based on linear OA(64⁶¹, large, F₆₄, 16) (dual of [large, large−61, 17]-code), using
        the primitive expurgated narrow-sense BCH-code C(I) with length 16777215Â = 64⁴âˆ’1, defining interval IÂ =Â [0,15], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 17 [i]

(142, 158, large)-Net over F₈ — Digital

Digital (142, 158, large)-net over F₈, using

t-expansion [i] based on digital (138, 158, large)-net over F₈, using
- 3 times m-reduction [i] based on digital (138, 161, large)-net over F₈, using
  - embedding of OOA with Gilbertâ€“VarÅ¡amov bound [i] based on linear OA(8¹⁶¹, large, F₈, 23) (dual of [large, large−161, 24]-code), using
    - the expurgated narrow-sense BCH-code C(I) with length 16777217Â | 8¹⁶âˆ’1, defining interval IÂ =Â [0,11], and minimum distance dÂ â‰¥ |{−11,−10,…,11}|+1Â =Â 24 (BCH-bound) [i]

(142, 158, large)-Net in Base 8 — Upper bound on s

There is no (142, 158, large)-net in base 8, because

14 times m-reduction [i] would yield (142, 144, large)-net in base 8, but
- mutually orthogonal hypercube bound [i]

Best Known (142, 158, s)-Nets in Base 8

(142, 158, 2105343)-Net over F8 — Constructive and digital

(142, 158, large)-Net over F8 — Digital

(142, 158, large)-Net in Base 8 — Upper bound on s

(142, 158, 2105343)-Net over F₈ — Constructive and digital

(142, 158, large)-Net over F₈ — Digital