The essay has a study on enumeration question labeled oriented connected graphs with only one cut vertices and labeled oriented connected graphs that all of cut vertices are in same block.
根据标号有向块的指数型生成函数，研究了具有唯一一个割点的标号有向连通图及所有割点都在一个块上的标号有向连通图的计数问题。
The essay has a study on enumeration question labeled oriented connected graphs with only one cut vertices and labeled oriented connected graphs that all of cut vertices are in same block.
根据标号有向块的指数型生成函数，研究了具有唯一一个割点的标号有向连通图及所有割点都在一个块上的标号有向连通图的计数问题。
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