 of a network determine which parts of the
% network are reachable from other parts.  One of your first questions
% about any network should generally be: is it connected?
%
% There are two types of connected components: components and strongly
% connected components.  gaimc only implements an algorithm for the latter
% case, but that's okay!  It turns out it computes exactly the right thing
% for connected components as well.  The difference only occurs when the
% graph is undirected vs. directed.

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