MinT - Information on Result #909580

Information on Result #909580

Linear OOA(4¹⁸⁷, 97, F₄, 2, 136) (dual of [(97, 2), 7, 137]-NRT-code), using juxtaposition based on

linear OOA(4¹⁹, 13, F₄, 2, 16) (dual of [(13, 2), 7, 17]-NRT-code), using
- discarding factors / shortening the dual code based on linear OOA(4¹⁹, 14, F₄, 2, 16) (dual of [(14, 2), 9, 17]-NRT-code), using
  - extended algebraic-geometric NRT-code AG_e(2;F,11P) [i] based on function field F/F₄ with g(F) = 3 and N(F) ≥ 14, using
    - an explicitly constructive algebraic function field [i]
linear OOA(4¹⁶¹, 84, F₄, 2, 119) (dual of [(84, 2), 7, 120]-NRT-code), using
- generalized (u,Â u+v)-construction [i] based on
  1. linear OOA(4³⁶, 21, F₄, 2, 29) (dual of [(21, 2), 6, 30]-NRT-code), using
    - extended algebraic-geometric NRT-code AG_e(2;F,12P) [i] based on function field F/F₄ with g(F) = 7 and N(F) ≥ 21, using
      - an explicitly constructive algebraic function field [i]
  2. linear OOA(4⁴¹, 21, F₄, 2, 39) (dual of [(21, 2), 1, 40]-NRT-code), using
    - strength reduction [i] based on linear OOA(4⁴¹, 21, F₄, 2, 41) (dual of [(21, 2), 1, 42]-NRT-code), using
      - dual of repetition NRT-code with length 21 [i]
  3. linear OOA(4⁴², 21, F₄, 2, 42) (dual of [(21, 2), 0, 43]-NRT-code), using
    - complete OOA / dual of NRT-code with only one code word [i]
  4. linear OOA(4⁴², 21, F₄, 2, 42) (dual of [(21, 2), 0, 43]-NRT-code) (see above)

Mode: Constructive and linear.

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