MinT - Information on Result #585014

Information on Result #585014

There is no linear OOA(3²⁴⁹, 257, F₃, 4, 167) (dual of [(257, 4), 779, 168]-NRT-code), because 2 times depth reduction would yield linear OOA(3²⁴⁹, 257, F₃, 2, 167) (dual of [(257, 2), 265, 168]-NRT-code), but

2 step m-reduction [i] would yield linear OA(3²⁴⁷, 257, F₃, 165) (dual of [257, 10, 166]-code), but
- constructionÂ Y1 [i] would yield
  1. linear OA(3²⁴⁶, 253, F₃, 165) (dual of [253, 7, 166]-code), but
    - residual code [i] would yield linear OA(3⁸¹, 87, F₃, 55) (dual of [87, 6, 56]-code), but
      - 1 times truncation [i] would yield linear OA(3⁸⁰, 86, F₃, 54) (dual of [86, 6, 55]-code), but
        residual code [i] would yield linear OA(3²⁶, 31, F₃, 18) (dual of [31, 5, 19]-code), but
        residual code [i] would yield linear OA(3⁸, 12, F₃, 6) (dual of [12, 4, 7]-code), but
        residual code [i] would yield linear OA(3², 5, F₃, 2) (dual of [5, 3, 3]-code or 5-arc in PG(1,3)), but
        improvement by Maruta on the Griesmer bound [i]
  2. OA(3¹⁰, 257, S₃, 4), but
    - discarding factors would yield OA(3¹⁰, 172, S₃, 4), but
      - the Rao or (dual) Hamming bound shows that MÂ â‰¥ 59169 > 3¹⁰ [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.