Re: [math-fun] Tree terminology

12 Jul 2012


      On Thursday 12 July 2012 06:43:26 Marc LeBrun wrote:
...
Tree is to Composition
  AS
X is to Partition
X  ==  ...?
For example the following are distinct Trees, but equivalent XÂ¹s:
O           O
   / \         / \
  O   O       O   O
 / \   \     /   / \
O   O   O   O   O   O
"Unordered tree"?

-- 
g

Re: [math-fun] Tree terminology

Gareth McCaughan