Total unimodularity and combinatorial theorems

Alan J. Hoffman

doi:10.1016/0024-3795(76)90047-1

Linear Algebra and Its Applications

Paper

01 Jan 1976

Total unimodularity and combinatorial theorems

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Abstract

It is shown how a wide variety of transversal theorems can be given a common proof. The proof depends on a certain matrix being totally unimodular, and it is shown that total unimodularity is needed for the theorem to hold. © 1976.

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