Information on Result #2857884
Linear OOA(3238, 1682646, F3, 5, 18) (dual of [(1682646, 5), 8412992, 19]-NRT-code), using strength reduction based on linear OOA(3238, 1682646, F3, 5, 19) (dual of [(1682646, 5), 8412992, 20]-NRT-code), using
- (u, u+v)-construction [i] based on
- linear OOA(357, 4926, F3, 5, 9) (dual of [(4926, 5), 24573, 10]-NRT-code), using
- OOA 4-folding and stacking with additional row [i] based on linear OA(357, 19705, F3, 9) (dual of [19705, 19648, 10]-code), using
- 1 times code embedding in larger space [i] based on linear OA(356, 19704, F3, 9) (dual of [19704, 19648, 10]-code), using
- construction X4 applied to C([0,4]) ⊂ C([0,3]) [i] based on
- linear OA(355, 19684, F3, 9) (dual of [19684, 19629, 10]-code), using the expurgated narrow-sense BCH-code C(I) with length 19684 | 318−1, defining interval I = [0,4], and minimum distance d ≥ |{−4,−3,…,4}|+1 = 10 (BCH-bound) [i]
- linear OA(337, 19684, F3, 7) (dual of [19684, 19647, 8]-code), using the expurgated narrow-sense BCH-code C(I) with length 19684 | 318−1, defining interval I = [0,3], and minimum distance d ≥ |{−3,−2,…,3}|+1 = 8 (BCH-bound) [i]
- linear OA(319, 20, F3, 19) (dual of [20, 1, 20]-code or 20-arc in PG(18,3)), using
- dual of repetition code with length 20 [i]
- linear OA(31, 20, F3, 1) (dual of [20, 19, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(31, s, F3, 1) (dual of [s, s−1, 2]-code) for arbitrarily large s, using
- construction X4 applied to C([0,4]) ⊂ C([0,3]) [i] based on
- 1 times code embedding in larger space [i] based on linear OA(356, 19704, F3, 9) (dual of [19704, 19648, 10]-code), using
- OOA 4-folding and stacking with additional row [i] based on linear OA(357, 19705, F3, 9) (dual of [19705, 19648, 10]-code), using
- linear OOA(3181, 1677720, F3, 5, 19) (dual of [(1677720, 5), 8388419, 20]-NRT-code), using
- OOA 5-folding [i] based on linear OA(3181, 8388600, F3, 19) (dual of [8388600, 8388419, 20]-code), using
- discarding factors / shortening the dual code based on linear OA(3181, large, F3, 19) (dual of [large, large−181, 20]-code), using
- the expurgated narrow-sense BCH-code C(I) with length 14348908 | 330−1, defining interval I = [0,9], and minimum distance d ≥ |{−9,−8,…,9}|+1 = 20 (BCH-bound) [i]
- discarding factors / shortening the dual code based on linear OA(3181, large, F3, 19) (dual of [large, large−181, 20]-code), using
- OOA 5-folding [i] based on linear OA(3181, 8388600, F3, 19) (dual of [8388600, 8388419, 20]-code), using
- linear OOA(357, 4926, F3, 5, 9) (dual of [(4926, 5), 24573, 10]-NRT-code), using
Mode: Constructive and linear.
Optimality
Show details for fixed k and m, k and s, k and t, m and s, m and t.
Other Results with Identical Parameters
None.
Depending Results
None.