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About: Edmonds matrix     Goto   Sponge   NotDistinct   Permalink

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Type: yago:WikicatMatricesyago:Abstraction100002137yago:Arrangement107938773yago:Array107939382yago:Group100031264yago:Matrix108267640 New Facet based on Instances of this Class

In graph theory, the Edmonds matrix of a balanced bipartite graph with sets of vertices and is defined by where the xij are indeterminates. One application of the Edmonds matrix of a bipartite graph is that the graph admits a perfect matching if and only if the polynomial det(Aij) in the xij is not identically zero. Furthermore, the number of perfect matchings is equal to the number of monomials in the polynomial det(A), and is also equal to the permanent of . In addition, rank of is equal to the maximum matching size of .