Information on Result #672333
Linear OA(2173, 524309, F2, 19) (dual of [524309, 524136, 20]-code), using construction X4 applied to Ce(18) ⊂ Ce(16) based on
- linear OA(2172, 524288, F2, 19) (dual of [524288, 524116, 20]-code), using an extension Ce(18) of the primitive narrow-sense BCH-code C(I) with length 524287 = 219−1, defining interval I = [1,18], and designed minimum distance d ≥ |I|+1 = 19 [i]
- linear OA(2153, 524288, F2, 17) (dual of [524288, 524135, 18]-code), using an extension Ce(16) of the primitive narrow-sense BCH-code C(I) with length 524287 = 219−1, defining interval I = [1,16], and designed minimum distance d ≥ |I|+1 = 17 [i]
- linear OA(220, 21, F2, 19) (dual of [21, 1, 20]-code), using
- strength reduction [i] based on linear OA(220, 21, F2, 20) (dual of [21, 1, 21]-code or 21-arc in PG(19,2)), using
- dual of repetition code with length 21 [i]
- strength reduction [i] based on linear OA(220, 21, F2, 20) (dual of [21, 1, 21]-code or 21-arc in PG(19,2)), using
- linear OA(21, 21, F2, 1) (dual of [21, 20, 2]-code), using
- discarding factors / shortening the dual code based on linear OA(21, s, F2, 1) (dual of [s, s−1, 2]-code) for arbitrarily large s, using
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 OA(2173, 524309, F2, 18) (dual of [524309, 524136, 19]-code) | [i] | Strength Reduction | |
| 2 | Linear OA(2174, 524310, F2, 19) (dual of [524310, 524136, 20]-code) | [i] | Code Embedding in Larger Space | |
| 3 | Linear OA(2175, 524311, F2, 19) (dual of [524311, 524136, 20]-code) | [i] | ||
| 4 | Linear OA(2176, 524312, F2, 19) (dual of [524312, 524136, 20]-code) | [i] | ||
| 5 | Linear OA(2177, 524313, F2, 19) (dual of [524313, 524136, 20]-code) | [i] | ||
| 6 | Linear OA(2172, 524308, F2, 18) (dual of [524308, 524136, 19]-code) | [i] | Truncation | |