Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Representation of a community as a square lattice on ℤ2. Each site represents a cluster and neighbours of a cluster are the sites which have a common border to the site of the cluster. Inter-cluster transmission rate is λ, and within cluster transmission rate is φ.
