On transitive orientations of G-e
نویسنده
چکیده
A comparability graph is a graph whose edges can be oriented transitively. Given a comparability graph G = (V, E) and an arbitrary edge ê ∈ E we explore the question whether the graph G − ê, obtained by removing the undirected edge ê, is a comparability graph as well. We define a new substructure of implication classes and present a complete mathematical characterization of all those edges.
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ورودعنوان ژورنال:
- Discussiones Mathematicae Graph Theory
دوره 29 شماره
صفحات -
تاریخ انتشار 2009