16 citations · 33 across the 4 of their papers we have counts for
4 papers
complex Hadamard matrices of order 9, and MUBs
Bengt R. Karlsson
A new type of complex Hadamard matrices of order 9 are constructed. The studied matrices are symmetric, block circulant with circulant blocks () and form an until now unknown…
Threeparameter complex Hadamard matrices of order 6
Bengt R. Karlsson
A three-parameter family of complex Hadamard matrices of order 6 is presented. It significantly extends the set of closed form complex Hadamard matrices of this order, and in parti…
H_2-reducible Hadamard matrices of order 6
Bengt R. Karlsson
Complex Hadamard matrices H of order 6 are characterized in a novel manner, according to the presence/absence of order 2 Hadamard submatrices. It is shown that if there exists one…
Two-parameter complex Hadamard matrices for N=6
Bengt R. Karlsson
A new, two-parameter, nonaffine family of complex Hadamard matrices of order 6 is reported. It interpolates between the two Fourier families, and contains as one-parameter subfamil…