# Is there a special name for matrices consist of repeated unit vectors?

For example this one: $$Q=\begin{pmatrix} 1 & 1 & 1 & 0 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 1 & 1 & 1 & 0 & 0 & 0 \\ 0 & 0 & 0 & 0 & 0 & 0 & 1 & 1 & 1 \end{pmatrix}$$

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## 1 Answer

You might call'em a Kronecker product: $\pmatrix{1 &0&0\\0&1&0\\0&0&1}\otimes\pmatrix{1 &1&1}$ of matrices with entries from the Boolean domain B = {0, 1}.

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