A sharp upper bound is established on distinct columns of unit-sum polytopal totally unimodular matrices and on vertices of unimodular polytopes.
On a generaliza- tion of symmetric edge polytopes to regular matroids.Int
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Unimodular polytopes and column number bounds on polytopal totally unimodular matrices via Seymour's decomposition theorem
A sharp upper bound is established on distinct columns of unit-sum polytopal totally unimodular matrices and on vertices of unimodular polytopes.