A New Sufficient Condition for A Graph to Contain Three Disjoint 1-Factors
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摘要: Win于1982年證明了2n階Ore-(1)型圖有邊不交的3個1-因子.本文改進這個結果,得到一個新的充分條件:2n(n ≥ 10)階2-連通Ore-(-2)型圖G有邊不交的1個Hamilton圖和1個1-因子,除非G是附圖中所示的圖之一.
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關鍵詞:
- Ore-(-2)型圖 /
- 1-因子 /
- Hamilton圈
Abstract: It was proved by S Win in 1982 that every Ore-type-(1) graph of order 2n has a Hamilton cycle and a 1-factor which are edge-disjoint.In this paper, we obtain the following theorem Every 2-connected Ore-type-(-2) graph G of order 2n(n ≥ 10) has a Hamilton cycle and a 1-factor which are edge-disjoint unless G is one of the graphs in Figure.-
Key words:
- Ore-type-(-2) graph /
- 1-factor /
- Hamilton cycle
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