MinT - Information on Result #576627

Information on Result #576627

There is no linear OOA(7⁸, 74325, F₇, 3, 3) (dual of [(74325, 3), 222967, 4]-NRT-code), because 2 times depth reduction would yield linear OA(7⁸, 74325, F₇, 3) (dual of [74325, 74317, 4]-code or 74325-cap in PG(7,7)), but

removing affine subspaces [i] would yield
1. linear OA(7⁶, 1659, F₇, 3) (dual of [1659, 1653, 4]-code or 1659-cap in PG(5,7)), but
  - 1 times Hill recurrence [i] would yield linear OA(7⁵, 239, F₇, 3) (dual of [239, 234, 4]-code or 239-cap in PG(4,7)), but
    - a result by Edel, Storme, and Sziklai [i]
2. 9735-cap in AG(6,7), but
  - 2 times the recursive bound from Bierbrauer and Edel [i] would yield 239-cap in AG(4,7), but
    - embedding in projective space [i] would yield linear OA(7⁵, 239, F₇, 3) (dual of [239, 234, 4]-code or 239-cap in PG(4,7)) (see above)
3. 62933-cap in AG(7,7), but
  - 3 times the recursive bound from Bierbrauer and Edel [i] would yield 239-cap in AG(4,7) (see above)

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.