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Distance-2 Edge Coloring is NP-Complete

Jeff Erickson·Shripad Thite·David P. Bunde
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Abstract

We prove that it is NP-complete to determine whether there exists a distance-2 edge coloring (strong edge coloring) with 5 colors of a bipartite 2-inductive graph with girth 6 and maximum degree 3.

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Jeff Erickson, Shripad Thite, David P. Bunde. 2005-09-30. Distance-2 Edge Coloring is NP-Complete. https://arxiv.org/abs/cs/0509100

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