The homeomorphism classification of graph like manifolds can be transformed into a 2 edge colouring enumeration problem for graphs.

图式流形的同胚分类可转化为图的一类2 -边着色计数问题。

youdao

R-colouring is only used by the people in Northern China. Almost every Chinese in Southern China, like me, never use it, while there is still no problem in communication.

其实儿话音只是中国北方人说的，像我这样的南方人从来不用儿话音，交流也没问题。

youdao

R-colouring is only used by the people in Northern China. Almost every Chinese in Southern China, like me, never use it, while there is still no problem in communication.

其实儿话音只是中国北方人说的，像我这样的南方人从来不用儿话音，交流也没问题。

youdao