maximal affine Hadamard family
An affine Hadamard family $H(R)$ stemming
from a dephased $N\times N$
complex
Hadamard matrix $H$ is
called a maximal affine Hadamard family if
it is not contained in any larger affine Hadamard
family $H(S)$ stemming from $H$ that is
$R\subset S\Longrightarrow R=S$.