伪图 Multigraph
（重定向自Pseudograph）
![一个有数个多重边（红色）和环（蓝色）的伪图，有些书籍定义伪图时不允许其有环的结构](/Images/godic/202502/05/Multi-pseudograph.svg2438.png")
![Schematischer Aufbau eines Stammbaumes](/Images/godic/202502/05/Stammbaum.svg2439.png")
![Plan der Wiener U-Bahn](/Images/godic/202502/05/U-Bahn_Wien2439.png")
![Multigraph: Mehrfachkanten werden durch eine gewichtete Kante visualisiert](/Images/godic/202502/05/CPT-Graphs-directed-weighted-ex1.svg2439.png")
伪图（英语：pseudograph）或多重图（multigraph）是一个允许有多重边的图，也就是有至少二个边的二个顶点完全相同，至少有二个顶点可以由二个边相连接。
pseudograph
/'psjʊdoɡræf/
英汉-汉英词典
n. 伪作,伪书
词组 | 习惯用语
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- photograph n. 相片 vi. 拍照，摄影；被照相 vt. 给 ... 照相
- postgraduate n. 研究生 adj. 大学毕业后的；研究生的
- seismograph n. 地动仪；测振仪
- selenographer n. 月面学家
pseudograph n. 伪书；伪作
网络短语:
boundary pseudograph 边界伪图
中文百科
英语百科
Multigraph 伪图
（重定向自Pseudograph）
![A multigraph with multiple edges (red) and several loops (blue). Not all authors allow multigraphs to have loops.](/Images/godic/202502/05/Multi-pseudograph.svg2439.png")
In mathematics, and more specifically in graph theory, a multigraph is a graph which is permitted to have multiple edges (also called parallel edges), that is, edges that have the same end nodes. Thus two vertices may be connected by more than one edge.
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