“Isomorphism,” on the other hand, is a mathematical term, which captures the notion of two mathematical objects that have corresponding or similar forms when we simply ignore their individual distinctions. When applying this mathematical concept to graph theory, it becomes easy to visualize. Take for example the two graphs in Figure 3-1.
These graphs are isomorphic, even though they look very different. The two graphs have the same number of nodes, with each node having the same number of edges. But what makes them isomorphic is that there exists a mapping for each node ...