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Trees are always graphs. A tree is a an acyclic graph with a node designated as root.
by user5994461 8y ago
Trees are always graphs. A tree is a an acyclic graph with a node designated as root.
- frutiger 8y agoYou can have unrooted trees. See the second paragraph at https://en.wikipedia.org/wiki/Tree_(graph_theory)#Rooted_tree https://en.wikipedia.org/wiki/Tree_(graph_theory)#Rooted_tre....