Equivalences[g, h, f1, f2, ...] and Equivalences[g, f1, f2, ...]
can also be used, where  are functions that compute other vertex invariants. It is expected that for each function  , the call ![f_i[g,v]](Files/Equivalences.en/6.gif "f_i[g,v]") returns the corresponding invariant at vertex  in graph  . The functions  are evaluated in order, and the evaluation stops either when all functions have been evaluated or when an empty equivalence class is found. Three vertex invariants, DegreesOf2Neighborhood, NumberOf2Paths, and Distances are Combinatorica functions and can be used to refine the equivalences. |
and 
defined by their vertex degrees. 
defined by the vertex degrees. 
