  In this paper, we study graphon mean field games using a system of
forward-backward stochastic differential equations. We establish the existence
and uniqueness of solutions under two different assumptions and prove the
stability with respect to the interacting graphons which are necessary to show
propagation of chaos results. As an application of propagation of chaos, we
prove the convergence of n-player game Nash equilibrium for a general model,
which is new in the theory of graphon mean field games.
