Originally Posted by

**Swlabr** I know very little about graph theory. However, as I understand it it is a subject which is much studied by computer scientists and less so by mathematicians (I met a graph theorist at a conference recently who spent most of his time in a computer science conference that was going on across the road). Computer scientist are not mathematicians, and so analysis is not something they would necessarily feel comfortable with.

However, graphs are used in mathematics to study things, and often then analysis is used. For example, look up "ends of groups" - an end is the limit of a connected component of the cayley graph of a tree, and they are, I suppose, well understood (in the sense that a classification exists for them).

Analysis is also used in group theory to study, for example, amenability.