MinT - Information on Result #1018574

Information on Result #1018574

Linear OOA(81⁵², 2805922, F₈₁, 3, 11) (dual of [(2805922, 3), 8417714, 12]-NRT-code), using (u,Â u+v)-construction based on

linear OOA(81¹¹, 9721, F₈₁, 3, 5) (dual of [(9721, 3), 29152, 6]-NRT-code), using
- OOA 2-folding and stacking with additional row [i] based on linear OA(81¹¹, 19443, F₈₁, 5) (dual of [19443, 19432, 6]-code), using
  - (u,Â uâˆ’v,Â u+v+w)-construction [i] based on
    1. linear OA(81¹, 6481, F₈₁, 1) (dual of [6481, 6480, 2]-code), using
      - discarding factors / shortening the dual code based on linear OA(81¹, s, F₈₁, 1) (dual of [s, s−1, 2]-code) for arbitrarily large s, using
        parity-check code [i]
    2. linear OA(81³, 6481, F₈₁, 2) (dual of [6481, 6478, 3]-code), using
      - discarding factors / shortening the dual code based on linear OA(81³, 6643, F₈₁, 2) (dual of [6643, 6640, 3]-code), using
        Hamming code H(3,81) [i]
    3. linear OA(81⁷, 6481, F₈₁, 5) (dual of [6481, 6474, 6]-code), using
      - a code by Danev and Olsson [i]
linear OOA(81⁴¹, 2796201, F₈₁, 3, 11) (dual of [(2796201, 3), 8388562, 12]-NRT-code), using
- OOA 3-folding [i] based on linear OA(81⁴¹, large, F₈₁, 11) (dual of [large, large−41, 12]-code), using
  - the expurgated narrow-sense BCH-code C(I) with length 21523361Â | 81⁸âˆ’1, defining interval IÂ =Â [0,5], and minimum distance dÂ â‰¥ |{−5,−4,…,5}|+1Â =Â 12 (BCH-bound) [i]

Mode: Constructive and linear.

None.

The following results depend on this result:

	Result		This result only	Method
1	Linear OOA(81⁶⁹, 5611844, F₈₁, 3, 11) (dual of [(5611844, 3), 16835463, 12]-NRT-code)	[i]		(u,Â u+v)-Construction for OOAs