A note on mixed graphs and directed splitting off
نویسنده
چکیده
We give counterexamples to two conjectures in \Bill Jackson, Some remarks on arc-connectivity, vertex splitting, and orientation in graphs and digraphs, Journal of Graph Theory, 12(3):429{436, 1988" concerning orientations of mixed graphs and splitting oo in digraphs, and prove the rst conjecture in the (di-) Eulerian case(s). Beside that we solve the degree constrained directed augmentation problem for di-Eulerian mixed graphs.
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ورودعنوان ژورنال:
- Journal of Graph Theory
دوره 27 شماره
صفحات -
تاریخ انتشار 1998