bicritical
Describing a graph, the removal of two of whose vertices leaves a subgraph the edges…Describing a graph, the removal of two of whose vertices leaves a subgraph the edges of which can be coloured with only three colours
Describing a graph, the removal of two of whose vertices leaves a subgraph the edges…Describing a graph, the removal of two of whose vertices leaves a subgraph the edges of which can be coloured with only three colours