Cofinite Connectedness and Cofinite Group Actions
  We have defined and established a theory of cofinite connectedness of a cofinite graph. Many of the properties of connectedness of topological spaces have analogs for cofinite connectedness. We have seen that if $G$ is a cofinite group and Gamma=Gamma(G,X) is the Cayley graph. Then Gamma can be given a suitable cofinite uniform topological structure so that $X$ generates $G$, topologically iff Gamma is cofinitely connected.   Our immediate next concern is developing group actions on cofinite graphs. Defining the action of an abstract group over a cofinite graph in the most natural way we are able to characterize a unique way of uniformizing an abstract group with a cofinite structure, obtained from the cofinite structure of the graph in the underlying action, so that the aforesaid action becomes uniformly continuous. 
Amrita Acharyya, Jon M. Corson, Bikash Das
math.GN