MinT - Information on Result #975860

Information on Result #975860

Linear OOA(7⁵⁷, 2883651, F₇, 3, 7) (dual of [(2883651, 3), 8650896, 8]-NRT-code), using OOA 2-folding based on linear OOA(7⁵⁷, 5767302, F₇, 2, 7) (dual of [(5767302, 2), 11534547, 8]-NRT-code), using

discarding factors / shortening the dual code based on linear OOA(7⁵⁷, 5767303, F₇, 2, 7) (dual of [(5767303, 2), 11534549, 8]-NRT-code), using
- (u,Â u+v)-construction [i] based on
  1. linear OOA(7⁷, 2499, F₇, 2, 3) (dual of [(2499, 2), 4991, 4]-NRT-code), using
    - OAs with strength 3, bÂ â‰ Â 2, and mÂ >Â 3 are always embeddable [i] based on linear OA(7⁷, 2499, F₇, 3) (dual of [2499, 2492, 4]-code or 2499-cap in PG(6,7)), using
      - product of two caps with tangent hyperplane [i]
  2. linear OOA(7⁵⁰, 5764804, F₇, 2, 7) (dual of [(5764804, 2), 11529558, 8]-NRT-code), using
    - trace code [i] based on linear OOA(49²⁵, 2882402, F₄₉, 2, 7) (dual of [(2882402, 2), 5764779, 8]-NRT-code), using
      - OOA 2-folding [i] based on linear OA(49²⁵, 5764804, F₄₉, 7) (dual of [5764804, 5764779, 8]-code), using
        discarding factors / shortening the dual code based on linear OA(49²⁵, 5764805, F₄₉, 7) (dual of [5764805, 5764780, 8]-code), using
        constructionÂ X applied to C_e(6) âŠ‚ C_e(5) [i] based on
        linear OA(49²⁵, 5764801, F₄₉, 7) (dual of [5764801, 5764776, 8]-code), using an extension C_e(6) of the primitive narrow-sense BCH-code C(I) with length 5764800Â = 49⁴âˆ’1, defining interval IÂ =Â [1,6], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 7 [i]
        linear OA(49²¹, 5764801, F₄₉, 6) (dual of [5764801, 5764780, 7]-code), using an extension C_e(5) of the primitive narrow-sense BCH-code C(I) with length 5764800Â = 49⁴âˆ’1, defining interval IÂ =Â [1,5], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 6 [i]
        linear OA(49⁰, 4, F₄₉, 0) (dual of [4, 4, 1]-code), using
        discarding factors / shortening the dual code based on linear OA(49⁰, s, F₄₉, 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.

Optimality

Show details for fixed k and m, k and s, k and t, m and s, m and t.

Other Results with Identical Parameters

None.

Depending Results

None.