MinT - Information on Result #559262

Information on Result #559262

There is no linear OOA(4⁶⁴, 68, F₄, 2, 49) (dual of [(68, 2), 72, 50]-NRT-code), because 1 step m-reduction would yield linear OA(4⁶³, 68, F₄, 48) (dual of [68, 5, 49]-code), but

constructionÂ Y1 [i] would yield
1. linear OA(4⁶², 65, F₄, 48) (dual of [65, 3, 49]-code), but
  - Griesmer bound [i]
2. linear OA(4⁵, 68, F₄, 3) (dual of [68, 63, 4]-code or 68-cap in PG(4,4)), but
  - discarding factors / shortening the dual code would yield linear OA(4⁵, 42, F₄, 3) (dual of [42, 37, 4]-code or 42-cap in PG(4,4)), but
    - 41 is the largest size of a cap in PG(4,Â 4) [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

The following results depend on this result:

	Result		This result only	Method
1	No linear OOA(4⁶⁴, 68, F₄, 3, 49) (dual of [(68, 3), 140, 50]-NRT-code)	[i]		Depth Reduction