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Proof step 6 from proof levelsubset-tdnameex (previous step)

tdname∃(str, class), ∀ class. interface∃(str, class) → interface∃(str0, class), ∀ class. class∃(str, class) → class∃(str0, class) ⊦ tdname∃(str0, class)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ tdname∃(str, class) ↔ class∃(str, class) ∨ interface∃(str, class)
Proof step 5:
class∃(str, class) ∨ interface∃(str, class), ∀ class. interface∃(str, class) → interface∃(str0, class), ∀ class. class∃(str, class) → class∃(str0, class) ⊦ tdname∃(str0, class)

Rule argument

[speclemmaarg: ,tdname∃(str, class) ↔ class∃(str, class) ∨ interface∃(str, class) ,[class, str] → [class, str] ,F ,typefuns , ,tdnameex-def ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (class, str)]]