MinT - Best Known (87−9, 87, s)-Nets in Base 9

Best Known (87−9, 87, s)-Nets in Base 9

(87−9, 87, 4725744)-Net over F₉ — Constructive and digital

Digital (78, 87, 4725744)-net over F₉, using

9¹ times duplication [i] based on digital (77, 86, 4725744)-net over F₉, using
- (u,Â u+v)-construction [i] based on
  1. digital (16, 20, 531444)-net over F₉, using
    - net defined by OOA [i] based on linear OOA(9²⁰, 531444, F₉, 4, 4) (dual of [(531444, 4), 2125756, 5]-NRT-code), using
      - appending kth column [i] based on linear OOA(9²⁰, 531444, F₉, 3, 4) (dual of [(531444, 3), 1594312, 5]-NRT-code), using
        OA 2-folding and stacking [i] based on linear OA(9²⁰, 1062888, F₉, 4) (dual of [1062888, 1062868, 5]-code), using
        trace code [i] based on linear OA(81¹⁰, 531444, F₈₁, 4) (dual of [531444, 531434, 5]-code), using
        constructionÂ X applied to C_e(3) âŠ‚ C_e(2) [i] based on
        linear OA(81¹⁰, 531441, F₈₁, 4) (dual of [531441, 531431, 5]-code), using an extension C_e(3) of the primitive narrow-sense BCH-code C(I) with length 531440Â = 81³âˆ’1, defining interval IÂ =Â [1,3], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 4 [i]
        linear OA(81⁷, 531441, F₈₁, 3) (dual of [531441, 531434, 4]-code or 531441-cap in PG(6,81)), using an extension C_e(2) of the primitive narrow-sense BCH-code C(I) with length 531440Â = 81³âˆ’1, defining interval IÂ =Â [1,2], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 3 [i]
        linear OA(81⁰, 3, F₈₁, 0) (dual of [3, 3, 1]-code), using
        discarding factors / shortening the dual code based on linear OA(81⁰, s, F₈₁, 0) (dual of [s, s, 1]-code) with arbitrarily large s, using
        OA with only one run / dual of code without redundancy [i]
  2. digital (57, 66, 4194300)-net over F₉, using
    - net defined by OOA [i] based on linear OOA(9⁶⁶, 4194300, F₉, 10, 9) (dual of [(4194300, 10), 41942934, 10]-NRT-code), using
      - OOA 2-folding and stacking with additional row [i] based on linear OOA(9⁶⁶, 8388601, F₉, 2, 9) (dual of [(8388601, 2), 16777136, 10]-NRT-code), using
        discarding factors / shortening the dual code based on linear OOA(9⁶⁶, 8388602, F₉, 2, 9) (dual of [(8388602, 2), 16777138, 10]-NRT-code), using
        trace code [i] based on linear OOA(81³³, 4194301, F₈₁, 2, 9) (dual of [(4194301, 2), 8388569, 10]-NRT-code), using
        OOA 2-folding [i] based on linear OA(81³³, 8388602, F₈₁, 9) (dual of [8388602, 8388569, 10]-code), using
        discarding factors / shortening the dual code based on linear OA(81³³, large, F₈₁, 9) (dual of [large, large−33, 10]-code), using
        the expurgated narrow-sense BCH-code C(I) with length 21523361Â | 81⁸âˆ’1, defining interval IÂ =Â [0,4], and minimum distance dÂ â‰¥ |{−4,−3,…,4}|+1Â =Â 10 (BCH-bound) [i]

(87−9, 87, large)-Net over F₉ — Digital

Digital (78, 87, large)-net over F₉, using

t-expansion [i] based on digital (76, 87, large)-net over F₉, using
- 2 times m-reduction [i] based on digital (76, 89, large)-net over F₉, using
  - embedding of OOA with Gilbertâ€“VarÅ¡amov bound [i] based on linear OA(9⁸⁹, large, F₉, 13) (dual of [large, large−89, 14]-code), using
    - the expurgated narrow-sense BCH-code C(I) with length 21523360Â | 9⁸âˆ’1, defining interval IÂ =Â [0,12], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 14 [i]

(87−9, 87, large)-Net in Base 9 — Upper bound on s

There is no (78, 87, large)-net in base 9, because

7 times m-reduction [i] would yield (78, 80, large)-net in base 9, but
- mutually orthogonal hypercube bound [i]

Best Known (87−9, 87, s)-Nets in Base 9

(87−9, 87, 4725744)-Net over F9 — Constructive and digital

(87−9, 87, large)-Net over F9 — Digital

(87−9, 87, large)-Net in Base 9 — Upper bound on s

(87−9, 87, 4725744)-Net over F₉ — Constructive and digital

(87−9, 87, large)-Net over F₉ — Digital