On the number of 4-contractible edges in 4-connected graphs
نویسندگان
چکیده
We prove that every finite 4-connected graph G has at least 1 34 · (|E(G)| − 2|V (G)|) many contractible edges. AMS subject classification: 05c40, 05c35.
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ورودعنوان ژورنال:
- J. Comb. Theory, Ser. B
دوره 99 شماره
صفحات -
تاریخ انتشار 2009