Given a square matrix M with entries from {1,-1} how to find all possible sets of matrices A1,A2,A3.....(with entries from {0,-1,1}), such that M=A1+A2+A3....
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Given a square matrix M with entries from {1,-1} how to find all possible sets of matrices A1,A2,A3.....(with entries from {0,-1,1}), such that M=A1+A2+A3....