MinT - Information on Result #904885

Information on Result #904885

Linear OOA(128⁴², 1048729, F₁₂₈, 2, 12) (dual of [(1048729, 2), 2097416, 13]-NRT-code), using (u,Â u+v)-construction based on

linear OOA(128⁷, 150, F₁₂₈, 2, 6) (dual of [(150, 2), 293, 7]-NRT-code), using
- extended algebraic-geometric NRT-code AG_e(2;F,293P) [i] based on function field F/F₁₂₈ with g(F) = 1 and N(F) ≥ 150, using
  - a function field by SÃ©mirat [i]
linear OOA(128³⁵, 1048579, F₁₂₈, 2, 12) (dual of [(1048579, 2), 2097123, 13]-NRT-code), using
- OOA 2-folding [i] based on linear OA(128³⁵, 2097158, F₁₂₈, 12) (dual of [2097158, 2097123, 13]-code), using
  - discarding factors / shortening the dual code based on linear OA(128³⁵, 2097159, F₁₂₈, 12) (dual of [2097159, 2097124, 13]-code), using
    - constructionÂ X applied to C_e(11) âŠ‚ C_e(9) [i] based on
      1. linear OA(128³⁴, 2097152, F₁₂₈, 12) (dual of [2097152, 2097118, 13]-code), using an extension C_e(11) of the primitive narrow-sense BCH-code C(I) with length 2097151Â = 128³âˆ’1, defining interval IÂ =Â [1,11], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 12 [i]
      2. linear OA(128²⁸, 2097152, F₁₂₈, 10) (dual of [2097152, 2097124, 11]-code), using an extension C_e(9) of the primitive narrow-sense BCH-code C(I) with length 2097151Â = 128³âˆ’1, defining interval IÂ =Â [1,9], and designed minimum distance dÂ â‰¥Â |I|+1Â =Â 10 [i]
      3. linear OA(128¹, 7, F₁₂₈, 1) (dual of [7, 6, 2]-code), using
        discarding factors / shortening the dual code based on linear OA(128¹, s, F₁₂₈, 1) (dual of [s, s−1, 2]-code) for arbitrarily large s, using
        parity-check code [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(128⁴², 524364, F₁₂₈, 4, 12) (dual of [(524364, 4), 2097414, 13]-NRT-code)	[i]		OOA Folding