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Subgraphs of 4-Regular Planar Graphs


We shall present an algorithm for determining whether or not a given planar graph H can ever be a subgraph of a 4-regular planar graph. The algorithm has running time O(|H|2.5) and can be used to find an explicit 4-regular planar graph GH if such a graph exists. It shall not matter whether we specify that H and G must be simple graphs or allow them to be multigraphs.

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Correspondence to Chris Dowden.

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Dowden, C., Addario-Berry, L. Subgraphs of 4-Regular Planar Graphs. Algorithmica 61, 758–776 (2011). https://doi.org/10.1007/s00453-010-9435-8

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  • Planar graphs
  • Subgraph appearance