Propagation of chaos for topological interactions

We consider a N-particle model describing an alignment mechanism due to a topological interaction among the agents. We show that the kinetic equation, expected to hold in the mean-field limit N.., as following from the previous analysis in (J. Stat. Phys. 163 (2016) 41.60) can be rigorously derived. This means that the statistical independence (propagation of chaos) is indeed recovered in the limit, provided it is assumed at time zero.