| 图半群 |
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| 引用本文： | 师海中,祁永谨.图半群[J].西北师范大学学报,1991(2). |
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| 作者姓名： | 师海中 祁永谨 |
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| 作者单位： | 西北师范大学数学系，西北师范大学数学系 |
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| 摘 要： | 构造了图半群,并证明两个拟简单图同构的充要条件是其相应的图半群同构;讨论了图半群、子图半群的一些性质;引进有向图半群,并讨论了它与严格有向图的关系.
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| 关 键 词： | 图半群 拟简单图 子图半群 有向图半群 |
Graph-semigroup |
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| Shi Haizhong Qi Yongjin.Graph-semigroup[J].Journal of Northwest Normal University Natural Science (Bimonthly),1991(2). |
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| Authors: | Shi Haizhong Qi Yongjin |
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| Institution: | Department of Mathematics |
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| Abstract: | In this paper, graph-semigroup is defined, and poved that two pseudo-simple graphs are isomorphic if and only if their graph-semigroups are isomorphic.Properties of graph-semigroup and subgraph-semigroup are given. Digraph-semigroup also is defined. Relation of digraph-semigroup with digraph is discussed. |
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| Keywords: | graph-semigroup pseudo-simple graph subgraph-semigroup digraph-semigroup |
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