| 直径为4的整树 |
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| 引用本文： | 袁平之. 直径为4的整树[J]. 系统科学与数学, 1998, 18(2): 177-181 |
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| 作者姓名： | 袁平之 |
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| 作者单位： | 长沙铁道学院数学力学系!长沙，410075 |
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| 摘 要： | 本文给出了直径为4的整树的一个充分条件，并由此给出了直径为4的整树的许多新类．最后提出一些基本的公开问题．
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| 关 键 词： | 直径为4的整树 图谱 丢番图方程 |
INTEGRAL TREES OF DIAMETER 4 |
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| Yuan Pingzhi. INTEGRAL TREES OF DIAMETER 4[J]. Journal of Systems Science and Mathematical Sciences, 1998, 18(2): 177-181 |
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| Authors: | Yuan Pingzhi |
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| Affiliation: | (Department of Mathematics and Mechanics, Changsha Railway Institute, Changsha 410075) |
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| Abstract: | in this paper, we give a sufficient condition for graphs to be the integral treesof diameter 4. Many new types of integral trees of diameter 4 are given by using this condition.Finally, we propose several basic open problems. |
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| Keywords: | Integral trees of diameter 4 spectra of graphs diophantine equations |
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