MinT - Information on Result #2874712

Information on Result #2874712

Linear OOA(3²⁴⁹, 1677884, F₃, 5, 21) (dual of [(1677884, 5), 8389171, 22]-NRT-code), using 3¹ times duplication based on linear OOA(3²⁴⁸, 1677884, F₃, 5, 21) (dual of [(1677884, 5), 8389172, 22]-NRT-code), using

(u,Â u+v)-construction [i] based on
1. linear OOA(3³⁸, 164, F₃, 5, 10) (dual of [(164, 5), 782, 11]-NRT-code), using
  - extracting embedded OOA [i] based on digital (28, 38, 164)-net over F₃, using
    - trace code for nets [i] based on digital (9, 19, 82)-net over F₉, using
      - base reduction for projective spaces (embedding PG(9,81) in PG(18,9)) for nets [i] based on digital (0, 10, 82)-net over F₈₁, using
        net from sequence [i] based on digital (0, 81)-sequence over F₈₁, using
        generalized Faure sequence [i]
        Niederreiterâ€“Xing sequence constructionÂ II/III [i] based on function field F/F₈₁ with g(F) = 0 and N(F) ≥ 82, using
        the rational function field F₈₁(x) [i]
        Niederreiter sequence [i]
2. linear OOA(3²¹⁰, 1677720, F₃, 5, 21) (dual of [(1677720, 5), 8388390, 22]-NRT-code), using
  - OOA 5-folding [i] based on linear OA(3²¹⁰, 8388600, F₃, 21) (dual of [8388600, 8388390, 22]-code), using
    - discarding factors / shortening the dual code based on linear OA(3²¹⁰, large, F₃, 21) (dual of [large, large−210, 22]-code), using
      - the primitive narrow-sense BCH-code C(I) with length 14348906Â = 3¹⁵âˆ’1, defining interval IÂ =Â [1,21], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 22 [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.