| tdname∃(str, class), level⊆(str, str0) ⊦ tdname∃(str0, class) |
⊦ level⊆(str, str0) ↔ (∀ class. class∃(str, class) → class∃(str0, class)) ∧ (∀ class. interface∃(str, class) → interface∃(str0, class))
tdname∃(str, class), (∀ class. class∃(str, class) → class∃(str0, class)) ∧ (∀ class. interface∃(str, class) → interface∃(str0, class)) ⊦ tdname∃(str0, class)
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str0, str)]]