MinT - Best Known (231, 231+14, s)-Nets in Base 2

Best Known (231, 231+14, s)-Nets in Base 2

(231, 231+14, 2396836)-Net over F₂ — Constructive and digital

Digital (231, 245, 2396836)-net over F₂, using

(u,Â u+v)-construction [i] based on
1. digital (58, 65, 2097150)-net over F₂, using
  - net defined by OOA [i] based on linear OOA(2⁶⁵, 2097150, F₂, 7, 7) (dual of [(2097150, 7), 14679985, 8]-NRT-code), using
    - OOA stacking with additional row [i] based on linear OOA(2⁶⁵, 2097151, F₂, 3, 7) (dual of [(2097151, 3), 6291388, 8]-NRT-code), using
      - OOAs constructed from BCH codes [i]
2. digital (166, 180, 1198418)-net over F₂, using
  - (u,Â u+v)-construction [i] based on
    1. digital (12, 19, 47)-net over F₂, using
      - linear code embedding found in a computer search [i]
    2. digital (147, 161, 1198371)-net over F₂, using
      - net defined by OOA [i] based on linear OOA(2¹⁶¹, 1198371, F₂, 14, 14) (dual of [(1198371, 14), 16777033, 15]-NRT-code), using
        OA 7-folding and stacking [i] based on linear OA(2¹⁶¹, 8388597, F₂, 14) (dual of [8388597, 8388436, 15]-code), using
        discarding factors / shortening the dual code based on linear OA(2¹⁶¹, large, F₂, 14) (dual of [large, large−161, 15]-code), using
        the primitive narrow-sense BCH-code C(I) with length 8388607Â = 2²³âˆ’1, defining interval IÂ =Â [1,14], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 15 [i]

(231, 231+14, large)-Net over F₂ — Digital

Digital (231, 245, large)-net over F₂, using

2¹⁴ times duplication [i] based on digital (217, 231, large)-net over F₂, using
- embedding of OOA with Gilbertâ€“VarÅ¡amov bound [i] based on linear OOA(2²³¹, large, F₂, 2, 14), using
  - 1 times NRT-code embedding in larger space [i] based on linear OOA(2²²⁹, 8388602, F₂, 2, 14) (dual of [(8388602, 2), 16776975, 15]-NRT-code), using
    - (u,Â u+v)-construction [i] based on
      1. linear OOA(2⁶⁸, 4194303, F₂, 2, 7) (dual of [(4194303, 2), 8388538, 8]-NRT-code), using
        OOAs constructed from BCH codes [i]
      2. linear OOA(2¹⁶¹, 4194301, F₂, 2, 14) (dual of [(4194301, 2), 8388441, 15]-NRT-code), using
        OOA 2-folding [i] based on linear OA(2¹⁶¹, 8388602, F₂, 14) (dual of [8388602, 8388441, 15]-code), using
        discarding factors / shortening the dual code based on linear OA(2¹⁶¹, large, F₂, 14) (dual of [large, large−161, 15]-code), using
        the primitive narrow-sense BCH-code C(I) with length 8388607Â = 2²³âˆ’1, defining interval IÂ =Â [1,14], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 15 [i]

(231, 231+14, large)-Net in Base 2 — Upper bound on s

There is no (231, 245, large)-net in base 2, because

12 times m-reduction [i] would yield (231, 233, large)-net in base 2, but
- mutually orthogonal hypercube bound [i]