Figure 1.

Examples of tree definitions. (a) A rooted tree T with four leaves {a, b, c, d}. (b) The subtree of T induced by X where X = {a, b}. (c) The restricted subtree of T induced by X.

Lin et al. BMC Bioinformatics 2012 13(Suppl 10):S12   doi:10.1186/1471-2105-13-S10-S12