Browsing Research Output by Subject "Forbidden subgraphs"

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    • Graphs with sparsity order at most two: the complex case 

      Ter Horst, S.; Klem, E.M. (Taylor & Francis, 2017)
      The sparsity order of a (simple undirected) graph is the highest possible rank (over or ) of the extremal elements in the matrix cone that consists of positive semidefinite matrices with prescribed zeros on the positions ...