| vertices_edges_to_ugraph/3 | Create unweighted graph |
| vertices/2 | Find vertices in graph |
| edges/2 | Find edges in graph |
| add_vertices/3 | Add vertices to graph |
| del_vertices/3 | Delete vertices from graph |
| add_edges/3 | Add edges to graph |
| del_edges/3 | Delete edges from graph |
| transpose_ugraph/2 | Invert the direction of all edges |
| neighbors/3 | Find neighbors of vertice |
| neighbours/3 | Find neighbors of vertice |
| complement/2 | Inverse presense of edges |
| compose/3 | |
| top_sort/2 | Sort graph topologically |
| top_sort/3 | Sort graph topologically |
| transitive_closure/2 | Create transitive closure of graph |
| reachable/3 | Find all reachable vertices |
| ugraph_union/3 | Union of two graphs |