Totally Unimodular matrices, for which every square submatrix has a determinant in $\{0,\pm 1\}$, are well-studied due to their usefulness in integer programming. Has there been any study of matrices whose submatrices have determinants in $\{0, \pm 1, \pm 2\}$? Are there any known useful classes of matrices with this property?
2026-03-26 16:08:45.1774541325
Matrices whose submatrices have determinant of at must 2
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