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Fig. 1 | BMC Evolutionary Biology

Fig. 1

From: Exact median-tree inference for unrooted reconciliation costs

Fig. 1

Stars S1-S5. The edges denote the relation ζ as follows: \(A \rightarrow \bar {A}\) is \(\neg \zeta (A) \wedge \zeta (\bar {A}), A \leftrightarrow \bar {A}\) is \(\neg \zeta (A) \wedge \neg \zeta (\bar {A})\) and \(A - \bar {A}\) is \(\zeta (A) \wedge \zeta (\bar {A})\). The nodes whose clusters are B and C we call right-hand in a given star. A red edge is an element of the plateau, i.e., its rooting is optimal (see Thm. 1)

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