The same N nodes, connected by different relationship types. Spreading processes interact across layers — the effective reproduction number depends on the multiplex structure.
Friends layer density:0.15
Work layer density:0.10
Family layer density:0.06
Multiplex networks capture real social systems: a person has friends, colleagues, and family — each relationship type carrying different information or disease pathways. The aggregated degree distribution changes, and spreading dynamics on the multiplex can exhibit richer phase diagrams than any single layer alone (Cozzo et al. 2013, Domenico et al. 2014).