\begin{definition}[Definition:Multiple Edge/Multiplicity]
Let $G = \struct {V, E}$ be a multigraph.
The '''multiplicity''' of an edge is the number of edges having the same pair of endvertices.
For example, simple edges have '''multiplicity''' $1$.
Thus, an edge is a multiple edge {{iff}} its '''multiplicity''' exceeds $1$.
Category:Definitions/Multigraphs
\end{definition}