This paper is an attempt to further improve the theory, of integral sum graph by introducing an integral sum labeling of the lobster tree through sequential labeling method.
为进一步完善整和图理论，采用顺序标号法给出龙虾树的一种整和标号。
This paper analyzed the spatial characteristics of tree-like river networks, and built vector model based on graph theory.
以树状河系为研究对象，分析其空间特征，建立基于图论的水系网矢量模型。
In this paper it has been proved by the optimal tree construction of graph theory that Huffman's code is an optimal method of coding with minimum redundancy.
本文用图论中的最优树构成法证明哈夫曼编码方法是最小冗余的最优码。
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