  The study of network supported opinion dynamics in large groups of autonomous
agents is attracting an increasing interest during the last years. In this
paper, we proposed the use of the recent graphon theory to model and simulate
an interacting system describing the evolution of individual opinions over an
arbitrary size networks. Specifically, we prove the existence and uniqueness of
the limit problem that approximates a very large networks made by homogeneous
groups of agents. The significant new example is the mean field analysis
deduced from the graphon limit systems in the case of piecewise constant
graphon.
