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.
when 
takes fixed values.
The networks used are multiplex ER networks with average degree (a) z1 = z2 = 2, (b) z1 = 2, z2 = 4 and network size N = 5000.
