All Questions
Tagged with spanning-tree enumerative-combinatorics
2 questions
2
votes
2
answers
105
views
Calculating number of vertex-pairs with separate common ancestor
Given a tree-graph with one of the vertices designated as the root, what is the complexity of calculating the number of vertex-pairs $\lbrace u,v \rbrace$ of which $v$ is not nearer to the root than $...
7
votes
1
answer
705
views
Is there a natural relationship between OEIS A127670 and Cayley's tree formula?
I apologize in advance that this question must sound highly amateurish, but I am wondering if there is any connection between the formula https://oeis.org/A127670 , which counts the number of fixed $n$...