Strongly 2-connected orientations of graphs
نویسنده
چکیده
We prove that a graph admits a strongly 2-connected orientation if and only if it is 4-edge-connected, and every vertex-deleted subgraph is 2-edge-connected. In particular, every 4-connected graph has such an orientation while no cubic 3-connected graph has such an orientation.
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ورودعنوان ژورنال:
- J. Comb. Theory, Ser. B
دوره 110 شماره
صفحات -
تاریخ انتشار 2015