4 ms·

> What makes a tree a tree? Simple: It has no cycles!

• brongondwana 9y ago
  What a dag.
  • deleted 9y ago
    [deleted]
• dredmorbius 9y ago
  Actually, the graph might be a useful element to consider.
• knappa 9y ago
  https://imgur.com/a/czq93 https://imgur.com/a/czq93
  • coldacid 9y ago
    Absolutely cursed image. (Also, I'd argue that's not a cycle since it doesn't return to earlier in the tree.)
• deleted 9y ago
  [deleted]
• thaumasiotes 9y ago
  Only sufficient for a forest, not a tree.