Answer by Walter Sebastian Gisler for Show the total unimodularity of...
Your matrix seems to represent the given model. If you multiply any of the variables with $M$, $M$ will definitely be part of the matrix. Like RobPratt pointed out, that alone is sufficient to say that...
View ArticleAnswer by RobPratt for Show the total unimodularity of constraints matrix
It is not totally unimodular. A necessary condition is that even the $1\times 1$ submatrices have determinant in $\{-1,0,1\}$. That is, individual entries must be in $\{-1,0,1\}$.
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Show the total unimodularity of constraints matrix
I have a model as below.I have constructed the matrix of its constraints as below. I need to show the total unimodularity of its constraints matrix. However, the determinant of the below submatrix...
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