Counting the Number of Minimum Roman Dominating Functions of a Graph
نویسندگان
چکیده
We provide two algorithms counting the number of minimum Roman dominating functions of a graph on n vertices in (1.5673) n time and polynomial space. We also show that the time complexity can be reduced to (1.5014) n if exponential space is used. Our result is obtained by transforming the Roman domination problem into other combinatorial problems on graphs for which exact algorithms already exist.
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ورودعنوان ژورنال:
- CoRR
دوره abs/1403.1019 شماره
صفحات -
تاریخ انتشار 2014