Minimum Spanning Trees ( min_span )

list<edge>	SPANNING_TREE(graph G)	SPANNING_TREE takes as argument a graph G(V, E). It computes a spanning tree T of the underlying undirected graph, SPANNING_TREE returns the list of edges of T. The algorithm ([52]) has running time O(| V| + | E|).
list<edge>	MIN_SPANNING_TREE(graph G, edge_array<int> cost)
		MIN_SPANNING_TREE takes as argument an undirected graph G(V, E) and an edge_array cost giving for each edge an integer cost. It computes a minimum spanning tree T of G, i.e., a spanning tree such that the sum of all edge costs is minimal. MIN_SPANNING_TREE returns the list of edges of T. The algorithm ([46]) has running time O(| E| log| V|).
list<edge>	MIN_SPANNING_TREE(graph G, int (*cmp)(edge, edge ))
		Variant using a function cmp to compare edge costs.