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arXiv · 1209.1730

Counting edge-Kempe-equivalence classes for 3-edge-colored cubic graphs

sarah-marie belcastro·Ruth Haas
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Abstract

Two edge colorings of a graph are {\em edge-Kempe equivalent} if one can be obtained from the other by a series of edge-Kempe switches. This work gives some results for the number of edge-Kempe equivalence classes for cubic graphs. In particular we show every 2-connected planar bipartite cubic graph has exactly one edge-Kempe equivalence class. Additionally, we exhibit infinite families of nonplanar bipartite cubic graphs with a range of numbers of edge-Kempe equivalence classes. Techniques are developed that will be useful for analyzing other classes of graphs as well.

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sarah-marie belcastro, Ruth Haas. 2012-09-08. Counting edge-Kempe-equivalence classes for 3-edge-colored cubic graphs. https://arxiv.org/abs/1209.1730

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