Even Cycles in Directed Graphs
نویسندگان
چکیده
It is proved that every strongly connected directed graph with n nodes and at least ⌊(n + 1)/4⌋ edges must contain an even cycle. This is best possible, and the structure of extremal graphs is discussed.
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ورودعنوان ژورنال:
- SIAM J. Discrete Math.
دوره 7 شماره
صفحات -
تاریخ انتشار 1994