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math.CO2016
Inducibility in binary trees and crossings in random tanglegrams
Éva Czabarka, László A. Székely, Stephan Wagner
In analogy to other concepts of a similar nature, we define the inducibility of a rooted binary tree. Given a fixed rooted binary tree with leaves, we let be the p…
math.CO2016
On the number of nonisomorphic subtrees of a tree
Éva Czabarka, László A. Székely, Stephan Wagner
We show that a tree of order has at most nonisomorphic subtrees, and that this bound is best possible. We also prove an analogous result for the number of nonisomo…