lower bound: | 112 |
upper bound: | 112 |
Construction of a linear code [236,12,112] over GF(2): [1]: [3, 2, 2] Cyclic Linear Code over GF(2) CordaroWagnerCode of length 3 [2]: [78, 6, 56] Linear Code over GF(2^2) Construction from a stored generator matrix: [ 1, 0, 0, 0, 0, 0, w^2, w^2, w^2, w, 0, 1, 0, w^2, 1, 1, 1, w^2, w^2, w^2, 1, 1, w^2, w^2, 1, w, w, w^2, 0, w, 0, 0, 1, 1, w^2, 0, w^2, w, w^2, w^2, 1, 1, 0, 0, w^2, 1, w^2, 1, 0, w^2, 1, 0, w, 0, w, w, w^2, w, w, w^2, 0, w^2, 0, 0, w^2, w, 1, w, w, 1, w^2, w, w^2, 0, 0, w^2, 0, w ] [ 0, 1, 0, 0, 0, 0, 1, w, w, 0, w, w, 1, 1, 1, w^2, w^2, 0, w, w, 1, w^2, 0, w, 1, w, 1, w^2, w^2, w^2, w, 0, w, w^2, 0, w^2, 1, 0, w^2, 0, 1, w^2, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, w^2, w, w^2, 1, w^2, 0, 1, w^2, w^2, 1, w^2, 0, 1, 0, 0, w, 1, 0, 0, 0, w^2, w^2, 0, 1, w^2, w^2 ] [ 0, 0, 1, 0, 0, 0, 1, 0, w^2, 1, 0, 0, w, 0, w^2, w^2, 1, w, 1, w^2, 0, w^2, w, 1, 0, w, 1, 0, w^2, 0, w^2, w, w, 0, w, 0, w, w, 1, w^2, w, w^2, w^2, 1, 1, w^2, 0, w, 1, 0, w^2, 1, w, w^2, 1, 0, 0, 0, w^2, 0, w^2, w, 1, w^2, 1, w, w, w^2, 1, w^2, 1, w^2, 1, w^2, w^2, 1, 1, 0 ] [ 0, 0, 0, 1, 0, 0, w, w^2, w, w, 1, w^2, 0, 0, w^2, 0, 0, w^2, 0, w^2, 0, w^2, 1, 0, w, 1, w^2, w^2, 0, w, 0, w^2, 1, 1, w, w, w, w^2, 0, w, 0, 1, w^2, w^2, w^2, w, 1, w^2, w, w^2, w^2, w^2, 0, w, w, 0, w, 1, 1, 1, 0, 1, w, 1, 1, 0, 1, w^2, w, w, 1, 0, 1, 1, w^2, 1, 1, 0 ] [ 0, 0, 0, 0, 1, 0, 0, w, w^2, w, w, 1, w^2, 0, 0, w^2, 0, 0, w^2, 0, w^2, 0, w^2, 1, 0, w, 1, w^2, w^2, 0, w, 0, w^2, 1, 1, w, w, w, w^2, 0, w, 0, 1, w^2, w^2, w^2, w, 1, w^2, w, w^2, w^2, w^2, 0, w, w, 0, w, 1, 1, 1, 0, 1, w, 1, 1, 0, 1, w^2, w, w, 1, 0, 1, 1, w^2, 1, 1 ] [ 0, 0, 0, 0, 0, 1, 1, 1, w^2, 0, w, 0, 1, w, w, w, 1, 1, 1, w, w, 1, 1, w, w^2, w^2, 1, 0, w^2, 0, 0, w, w, 1, 0, 1, w^2, 1, w^2, w, w, 0, 0, 1, w, 1, w, 0, 1, w, 0, w^2, 0, w^2, w^2, 1, w^2, w^2, 1, 0, 1, 0, 0, 1, w^2, w, w^2, w^2, w, 1, w^2, 1, 0, 0, 1, 0, w^2, w ] where w:=Root(x^2 + x + 1)[1,1]; [3]: [234, 12, 112] Linear Code over GF(2) ConcatenatedCode of [2] and [1] [4]: [236, 12, 112] Linear Code over GF(2) PadCode [3] by 2 last modified: 2001-01-30
Lb(236,12) = 112 is found by lengthening of: Lb(234,12) = 112 BZ Ub(236,12) = 112 follows by a one-step Griesmer bound from: Ub(123,11) = 56 follows by a one-step Griesmer bound from: Ub(66,10) = 28 otherwise adding a parity check bit would contradict: Ub(67,10) = 29 Ja
Ja: D.B. Jaffe, Binary linear codes: new results on nonexistence, 1996, code.ps.gz.
Notes
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