Quote:
Originally Posted by skwong
for the N = 4, k = 4 case (and now
name this as half of with rows:
0 1 1 0
1 0 1 0
1 1 0 0
Then, make the complementary
1 0 0 1
0 1 0 1
0 0 1 1
And let the remaining as :
0 0 0 x
0 0 1 0
0 1 0 0
0 1 1 1
1 0 0 0
1 0 1 1
1 1 0 1
1 1 1 x

I did not understand this construction. The two parts of
(the first two matrices with 3 rows) should be complements to each other only in the last column, but identical in the first 3. Also, when you focus on the first 3 columns, there should be no common rows between
and
(the latter being the matrix with 8 rows), and in your construction there are common rows.