Article
Keywords:
rooted tree; subtree distance; edge rotation distance
Summary:
Two types of a distance between isomorphism classes of graphs are adapted for rooted trees.
References:
                        
[1] G. Chartrand F. Saba H.-B. Zou: 
Edge rotations and distance between graphs. Časopis pěst. mat. 110 (1985), 87-91. 
MR 0791281[2] B. Zelinka: 
A distance between isomorphism classes of trees. Czechoslovak Math. J. 33 (198З), 126-130. 
MR 0687425