MinT - Information on Result #3146815

Information on Result #3146815

There is no digital (81, 249, 253)-net over F₃, because 6 times m-reduction would yield digital (81, 243, 253)-net over F₃, but

extracting embedded orthogonal array [i] would yield linear OA(3²⁴³, 253, F₃, 162) (dual of [253, 10, 163]-code), but
- constructionÂ Y1 [i] would yield
  1. linear OA(3²⁴², 249, F₃, 162) (dual of [249, 7, 163]-code), but
    - residual code [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, 253, 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, k and s, k and t, m and s, m and t, t and s.

Other Results with Identical Parameters

None.

Depending Results

None.