MinT - Information on Result #897597

Information on Result #897597

Linear OOA(9¹³³, 2391516, F₉, 2, 20) (dual of [(2391516, 2), 4782899, 21]-NRT-code), using (u,Â u+v)-construction based on

linear OOA(9¹³, 28, F₉, 2, 10) (dual of [(28, 2), 43, 11]-NRT-code), using
- extended algebraic-geometric NRT-code AG_e(2;F,45P) [i] based on function field F/F₉ with g(F) = 3 and N(F) ≥ 28, using
  - the Hermitian function field over F₉ [i]
linear OOA(9¹²⁰, 2391488, F₉, 2, 20) (dual of [(2391488, 2), 4782856, 21]-NRT-code), using
- OOA 2-folding [i] based on linear OA(9¹²⁰, 4782976, F₉, 20) (dual of [4782976, 4782856, 21]-code), using
  - constructionÂ X applied to C_e(19) âŠ‚ C_e(18) [i] based on
    1. linear OA(9¹²⁰, 4782969, F₉, 20) (dual of [4782969, 4782849, 21]-code), using an extension C_e(19) of the primitive narrow-sense BCH-code C(I) with length 4782968Â = 9⁷âˆ’1, defining interval IÂ =Â [1,19], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 20 [i]
    2. linear OA(9¹¹³, 4782969, F₉, 19) (dual of [4782969, 4782856, 20]-code), using an extension C_e(18) of the primitive narrow-sense BCH-code C(I) with length 4782968Â = 9⁷âˆ’1, defining interval IÂ =Â [1,18], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 19 [i]
    3. linear OA(9⁰, 7, F₉, 0) (dual of [7, 7, 1]-code), using
      - discarding factors / shortening the dual code based on linear OA(9⁰, s, F₉, 0) (dual of [s, s, 1]-code) for arbitrarily large s, using
        OA with only one run / dual of code without redundancy [i]

Mode: Constructive and linear.

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