| 关于K4同胚图色唯一性的几个新结果 |
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| 引用本文： | 李为民.关于K4同胚图色唯一性的几个新结果[J].应用数学,1991,4(3):43-47. |
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| 作者姓名： | 李为民 |
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| 作者单位： | 南京邮电学院 南京 |
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| 摘 要： | 本文证得:如果i,j,k,l,m,n中有四个数相等,而另外二个数不小于此数,则K_4(i,j,k,l,m,n)是色唯一的.此外,我们还得到了另外两族具有色唯一性的K_4同胚图.
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| 关 键 词： | 多项式 K_4同胚图 色唯一性 |
An Approach to Chromatic Uniqueness of K_4 Homeomorphs |
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| Li Weimin.An Approach to Chromatic Uniqueness of K_4 Homeomorphs[J].Mathematica Applicata,1991,4(3):43-47. |
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| Authors: | Li Weimin |
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| Institution: | Nanjing Post and Telecommunications College |
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| Abstract: | The K_4 homcomorph is denoted by K_4(i, j, k, l, m, n), in which the lengths of its six paths between pairs of degree-3 vertices are i,j,k,l,m, n respectively. It is shown that K-4(i, j, k, l, m,n) is chromatically unique if four numbers among i,j,k,l,m,n are equal and the other two numbers are not less than it. And two families of chromatically unique K_4 homeomorphs are also obtained. |
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| Keywords: | Chromatic polynomial K_4 homeomorph Chromatic uniqueness |
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