$$ A=\begin{bmatrix} a & b & b\\ b & a & b\\ b & b & a\\ \end{bmatrix} and \space B=\begin{bmatrix} 0 & A\\ A & 0\\ \end{bmatrix} $$
What are the eigen values and eigen vectors of B? Any help is appreciated.
$$ A=\begin{bmatrix} a & b & b\\ b & a & b\\ b & b & a\\ \end{bmatrix} and \space B=\begin{bmatrix} 0 & A\\ A & 0\\ \end{bmatrix} $$
What are the eigen values and eigen vectors of B? Any help is appreciated.