Graphs that are intrinsically linked with an unused vertex
نویسندگان
چکیده
We examine graphs that, for every spatial embedding, have a pair of linked cycles such that linked cycles do not pass through every vertex of the graph (we call such a graph intrinsically linked with an unused vertex). We demonstrate three graph operations that transform an intrinsically linked graph to a graph with this property. It remains an open question to determine all minor-minimal graphs that are intrinsically linked with an unused vertex.
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تاریخ انتشار 2005