Abstract
A chain probe graph is a graph that admits an independent set S of vertices and a set F of pairs of elements of S such that G+F is a chain graph (i.e., a 2K 2-free bipartite graph). We show that chain probe graphs are exactly the bipartite graphs that do not contain as an induced subgraph a member of a family of six forbidden subgraphs, and deduce an O(n 2) recognition algorithm.
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This research was made possible by the joint French–Israeli project Recognition, Decomposition, and Optimization Problems in Graph Theory.
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Golumbic, M.C., Maffray, F. & Morel, G. A characterization of chain probe graphs. Ann Oper Res 188, 175–183 (2011). https://doi.org/10.1007/s10479-009-0584-6
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DOI: https://doi.org/10.1007/s10479-009-0584-6