The edge multiplicity of a given end vertex in a multigraph is the number of multiple edges sharing that end vertex. The maximum edge multiplicity in such a graph is known as the graph multiplicity.
Edge Multiplicity
See also
Graph Multiplicity, Multigraph, OutdegreeExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Edge Multiplicity." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/EdgeMultiplicity.html