In article <firstname.lastname@example.org>, "Julio Di Egidio" <email@example.com> wrote:
> "Virgil" <firstname.lastname@example.org> wrote in message > news:virgil-75DF2B.22094321082013@BIGNEWS.USENETMONSTER.COM... > > > Consider the binary tree in which every right child has a child and > > every left child is a terminal node. > > > > Then there is in it for each member of |N a left terminal node having > > that path length, and an infinite path of all right nodes to represent > > the set |N itself, having one node at each length in |N. > > Just consider a unary tree.
A unary tree will be a finite tree if and only if it has a terminal node, unlike binary trees. --