Oriented chromatic number of Halin graphs
نویسندگان
چکیده
Oriented chromatic number of an oriented graph G is the minimum order of an oriented graph H such that G admits a homomorphism to H . The oriented chromatic number of an unoriented graph G is the maximal chromatic number over all possible orientations of G. In this paper, we prove that every Halin graph has oriented chromatic number at most 8, improving a previous bound by Hosseini Dolama and Sopena, and confirming the conjecture given by Vignal.
منابع مشابه
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ورودعنوان ژورنال:
- CoRR
دوره abs/1307.4901 شماره
صفحات -
تاریخ انتشار 2013