Pairs of Nodes

A Network (Graph) is a diagrammatic representation of a system. It consists of nodes (vertices), which represent the entities of the system. Pairs of nodes are joined by links (edges), which represent a particular kind of interconnection between those entities.

ESTRADA, Ernesto, 2012. The structure of complex networks: theory and applications. New York: Oxford University Press. ISBN 978-0-19-959175-6.