MinT - Information on Result #904629

Information on Result #904629

Linear OOA(81⁵⁵, 3381, F₈₁, 2, 22) (dual of [(3381, 2), 6707, 23]-NRT-code), using (u,Â u+v)-construction based on

linear OOA(81¹², 100, F₈₁, 2, 11) (dual of [(100, 2), 188, 12]-NRT-code), using
- extended algebraic-geometric NRT-code AG_e(2;F,188P) [i] based on function field F/F₈₁ with g(F) = 1 and N(F) ≥ 100, using
  - a function field by SÃ©mirat [i]
linear OOA(81⁴³, 3281, F₈₁, 2, 22) (dual of [(3281, 2), 6519, 23]-NRT-code), using
- OOA 2-folding [i] based on linear OA(81⁴³, 6562, F₈₁, 22) (dual of [6562, 6519, 23]-code), using
  - discarding factors / shortening the dual code based on linear OA(81⁴³, 6563, F₈₁, 22) (dual of [6563, 6520, 23]-code), using
    - constructionÂ X applied to C_e(21) âŠ‚ C_e(20) [i] based on
      1. linear OA(81⁴³, 6561, F₈₁, 22) (dual of [6561, 6518, 23]-code), using an extension C_e(21) of the primitive narrow-sense BCH-code C(I) with length 6560Â = 81²âˆ’1, defining interval IÂ =Â [1,21], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 22 [i]
      2. linear OA(81⁴¹, 6561, F₈₁, 21) (dual of [6561, 6520, 22]-code), using an extension C_e(20) of the primitive narrow-sense BCH-code C(I) with length 6560Â = 81²âˆ’1, defining interval IÂ =Â [1,20], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 21 [i]
      3. linear OA(81⁰, 2, F₈₁, 0) (dual of [2, 2, 1]-code), using
        discarding factors / shortening the dual code based on linear OA(81⁰, s, F₈₁, 0) (dual of [s, s, 1]-code) for arbitrarily large s, using
        OA with only one run / dual of code without redundancy [i]

Mode: Constructive and 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	Linear OOA(81⁵⁵, 1690, F₈₁, 4, 22) (dual of [(1690, 4), 6705, 23]-NRT-code)	[i]		OOA Folding