multigraph (240B)
1 # Multigraph 2 3 A [graph] where the same [edge] can exist multiple times, called a [multiedge] 4 5 Can also be seen as a [weighted_graph] where edges carry a nonzero integer weight 6 7 - [multigraph_directed] 8 - [multigraph_undirected] 9 10 Up: [graph]