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Edge-4-critical graphs

Last update: 20 Dec 2019  | Contains: 223951 graphs

An edge-4-critical graph, is a graph that is connected, is not (vertex) 3-colourable, and G-e is 3-colourable for every edge e. The following collection was calculated Brendan McKay (source) and lists all connected edge-4-critical graphs on up to 13 vertices.

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