MinT - Information on Result #1159999

Information on Result #1159999

Linear OOA(2²³⁷, 1198420, F₂, 7, 19) (dual of [(1198420, 7), 8388703, 20]-NRT-code), using (u,Â u+v)-construction based on

linear OOA(2²⁹, 49, F₂, 7, 9) (dual of [(49, 7), 314, 10]-NRT-code), using
- (u,Â u+v)-construction [i] based on
  1. linear OOA(2⁹, 23, F₂, 7, 4) (dual of [(23, 7), 152, 5]-NRT-code), using
    - appending 3 arbitrary columns [i] based on linear OOA(2⁹, 23, F₂, 4, 4) (dual of [(23, 4), 83, 5]-NRT-code), using
      - appending kth column [i] based on linear OOA(2⁹, 23, F₂, 3, 4) (dual of [(23, 3), 60, 5]-NRT-code), using
        extracting embedded OOA [i] based on digital (5, 9, 23)-net over F₂, using
        linear code embedding found in a computer search [i]
  2. linear OOA(2²⁰, 26, F₂, 7, 9) (dual of [(26, 7), 162, 10]-NRT-code), using
    - extracting embedded OOA [i] based on digital (11, 20, 26)-net over F₂, using
      - linear code embedding found in a computer search [i]
linear OOA(2²⁰⁸, 1198371, F₂, 7, 19) (dual of [(1198371, 7), 8388389, 20]-NRT-code), using
- OOA 7-folding [i] based on linear OA(2²⁰⁸, 8388597, F₂, 19) (dual of [8388597, 8388389, 20]-code), using
  - discarding factors / shortening the dual code based on linear OA(2²⁰⁸, large, F₂, 19) (dual of [large, large−208, 20]-code), using
    - the primitive expurgated narrow-sense BCH-code C(I) with length 8388607Â = 2²³âˆ’1, defining interval IÂ =Â [0,18], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 20 [i]

Mode: Constructive and linear.

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