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Figure 4 | Algorithms for Molecular Biology

Figure 4

From: Recursive algorithms for phylogenetic tree counting

Figure 4

Constraint tree. Constraint tree, labels are omitted. Subtree 2 is coloured green. It has two child nodes that are leaves, therefore, n 2 =2. The ancestor function for this tree is defined as f(2)=f(3)=1 and f(4)=2. A compact notation for this constraint tree is ( n 1 ,, n k ,f)=(0,2,3,2,{(2,1),(3,1),(4,2)}).

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