研究轮图在环面上嵌入的柔性,并得到了轮图在环面上嵌入的不同数目及其结构.作为其直接应用,决定了亏格不超过1的广义Halin图在环面上嵌入的结构.
In this paper, we investigate the flexibility of a wheel graph on S1 and determine the structures and the number of embeddings of wheel graphs on the torus. As their applications, the structures of embeddings of some generalized halin graphs (may be nonplanar) on the torus are also determined.