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中文摘要：
讨论了树的集有序强优美性,给出了集有序强优美树的概念,证明了由n棵集有序强优美树的任意排列构成的线性图空间仍具有集有序强优美性;给出了运用两棵同构的强优美树构造集有序强优美树的一种新方法,证明了强优美树与集有序强优美树可以构造强优美树.
英文摘要：
For studying set-ordered strong gracefulness of trees,we first define the set-ordered strong gracefulness of trees,and then show that the linear graph space constructed by any range of nset-ordered strong graceful trees has the set-ordered strong gracefulness.Secondly,we provide a method by which a set-ordered strongly graceful tree can be constructed any pair of isomorphic strongly graceful trees.At the end of this article the question of whether any strongly graceful tree can be constructed by two or more strongly graceful trees is raised.
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