Relation between taxa | Intensive | Ostensive | Notation | Properties |
---|---|---|---|---|
Congruent | Share the same characters | Share the same species | A=B | Symmetric, transitive |
Part of | All characters of a taxon are included in another taxon | All species are included in another taxon | A⊂B | Non-symmetric, transitive |
Overlap | At least one character is shared between taxa, but not all of them | At least one species is shared between taxa, but not all of them | A∩B≠∅,A≠B | Symmetric, non-transitive |