Information on Result #701317
Linear OA(79, 52, F7, 5) (dual of [52, 43, 6]-code), using construction XX applied to C1 = C({0,1,2,41}), C2 = C([0,3]), C3 = C1 + C2 = C([0,2]), and C∩ = C1 ∩ C2 = C({0,1,2,3,41}) based on
- linear OA(77, 48, F7, 4) (dual of [48, 41, 5]-code), using the primitive cyclic code C(A) with length 48 = 72−1, defining set A = {0,1,2,41}, and minimum distance d ≥ |{−1,0,1,2}|+1 = 5 (BCH-bound) [i]
- linear OA(77, 48, F7, 4) (dual of [48, 41, 5]-code), using the primitive expurgated narrow-sense BCH-code C(I) with length 48 = 72−1, defining interval I = [0,3], and designed minimum distance d ≥ |I|+1 = 5 [i]
- linear OA(79, 48, F7, 5) (dual of [48, 39, 6]-code), using the primitive cyclic code C(A) with length 48 = 72−1, defining set A = {0,1,2,3,41}, and minimum distance d ≥ |{−1,0,1,2,3}|+1 = 6 (BCH-bound) [i]
- linear OA(75, 48, F7, 3) (dual of [48, 43, 4]-code or 48-cap in PG(4,7)), using the primitive expurgated narrow-sense BCH-code C(I) with length 48 = 72−1, defining interval I = [0,2], and designed minimum distance d ≥ |I|+1 = 4 [i]
- linear OA(70, 2, F7, 0) (dual of [2, 2, 1]-code), using
- discarding factors / shortening the dual code based on linear OA(70, s, F7, 0) (dual of [s, s, 1]-code) for arbitrarily large s, using
- linear OA(70, 2, F7, 0) (dual of [2, 2, 1]-code) (see above)
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.
Compare with Markus Grassl’s online database of code parameters.
Other Results with Identical Parameters
None.
Depending Results
The following results depend on this result:
| Result | This result only | Method | ||
|---|---|---|---|---|
| 1 | Linear OOA(79, 26, F7, 2, 5) (dual of [(26, 2), 43, 6]-NRT-code) | [i] | OOA Folding | |