MinT - Information on Result #589440

Information on Result #589440

There is no linear OOA(3¹⁸⁰, 188, F₃, 5, 121) (dual of [(188, 5), 760, 122]-NRT-code), because 3 times depth reduction would yield linear OOA(3¹⁸⁰, 188, F₃, 2, 121) (dual of [(188, 2), 196, 122]-NRT-code), but

1 step m-reduction [i] would yield linear OA(3¹⁷⁹, 188, F₃, 120) (dual of [188, 9, 121]-code), but
- constructionÂ Y1 [i] would yield
  1. linear OA(3¹⁷⁸, 184, F₃, 120) (dual of [184, 6, 121]-code), but
    - residual code [i] would yield linear OA(3⁵⁸, 63, F₃, 40) (dual of [63, 5, 41]-code), but
      - 1 times truncation [i] would yield linear OA(3⁵⁷, 62, F₃, 39) (dual of [62, 5, 40]-code), but
        residual code [i] would yield linear OA(3¹⁸, 22, F₃, 13) (dual of [22, 4, 14]-code), but
        1 times truncation [i] would yield linear OA(3¹⁷, 21, F₃, 12) (dual of [21, 4, 13]-code), but
        â€œHNâ€ bound on codes from Brouwerâ€™s database [i]
  2. OA(3⁹, 188, S₃, 4), but
    - discarding factors would yield OA(3⁹, 100, S₃, 4), but
      - the Rao or (dual) Hamming bound shows that MÂ â‰¥ 20001 > 3⁹ [i]

Mode: Bound (linear).

Optimality

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

Other Results with Identical Parameters

None.

Depending Results

None.