self_loop (360B)
1 # Self loop 2 3 An [edge] from a [vertex] to itself 4 5 In [undirected_graphs], this is typically not allowed, or you would explicitly say that you are considering a graph with self-loops allowed. 6 7 In [directed_graphs], this is typically allowed 8 9 In [multigraph_directed], you may have multiple self-loops 10 11 Up: [graph_basic_notions] 12 13 Aliases: self-loops, self_loops