The face-subgraph characterization conjecture for compact visibility graphs

From papers

Let GG be a planar graph. For each internal face FF in a plane drawing of GG, let GFG_F denote the subgraph induced by the vertices incident with FF. Compact visibility conjecture. The graph GG is a compact visibility graph if and only if it has a plane drawing such that, for every internal face FF, the graph GFG_F is a compact visibility graph.

This would characterize compact visibility graphs through the compact visibility of the subgraphs induced by the boundaries of internal faces. The statement is motivated by the failure of the analogous characterization using only triangular internal faces, since K1,1,nK_{1,1,n} is a compact visibility graph but has no plane drawing with all internal faces triangular for n3n\geq 3.

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Primary source

Mike Develin, Stephen Hartke and David Petrie Moulton, “A general notion of visiblity graphs”, arXiv:math/0211183 (2002).

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