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arxiv: 1212.4086 · v1 · pith:4NUN2VB6new · submitted 2012-12-17 · 🧮 math.CO · cs.DM

On Frank's conjecture on k-connected orientations

classification 🧮 math.CO cs.DM
keywords conjecturefrankk-connectedk-vertex-connectedorientationdecidingdisprovegraph
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We disprove a conjecture of Frank stating that each weakly 2k-connected has a k-vertex-connected orientation. For k at least 3, we also prove that the problem of deciding whether a graph has a k-vertex-connected orientation is NP-complete.

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