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Generalization of Železník’s theorem on embeddings of tensor products of graphs. (English) Zbl 0853.05031
Summary: If a simple graph \(G\) has a diagonalizable quadrilateral embedding, then given an arbitrary simple graph \(H\), the tensor product \(G \otimes H\) also has a diagonalizable quadrilateral embedding. Using a (generalized) rotation scheme for a diagonalizable quadrilateral embedding of the graph \(G\) and a rotation scheme for an embedding of the graph \(H\), a (generalized) rotation scheme which determines a diagonalizable quadrilateral embedding of \(G \otimes H\) is constructed.

05C10 Planar graphs; geometric and topological aspects of graph theory
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