Recognizing Cartesian products of matrices and polytopes

Manuel Aprile, Michele Conforti, Yuri Faenza +3

The 1-product of matrices $S_1\in {\mathbb{R}}^{m_1\times n_1}$ and $S_2\in {\mathbb{R}}^{m_2\times n_2}$ is the matrix in ${\mathbb{R}}^{(m_1+m_2)\times (n_1{n}_2)}$ whose columns ar…