Mathematics – Combinatorics
Scientific paper
2006-07-29
Mathematics
Combinatorics
7 pages. To appear in Discrete Applied Mathematics
Scientific paper
10.1016/j.dam.2006.06.002
McMorris and Powers proved an Arrow-type theorem on phylogenies given as
collections of quartets. There is an error in one of the main lemmas used to
prove this theorem. However, this lemma (and thereby the theorem) is still
true, and a correct proof is provided.
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