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Proof step 17 from proof validstatfield-level-expand (previous step)

validstatfields(str, st) ↔ (∀ class. tdname∃(str, class) ∧ initdone(class, st) → validstatfields(str, class, st)) ⊦ validstatfields(str, st) ↔ (∀ class, sk. tdname∃(str, class) ∧ initdone(class, st) ∧ sk ∈ statfields(class) → validstatfield(str, sk, st))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ validstatfields(str, st) ↔ (∀ class. tdname∃(str, class) ∧ initdone(class, st) → validstatfields(str, class, st))
Proof step 16:
(∀ class. tdname∃(str, class) ∧ initdone(class, st) → validstatfields(str, class, st)) ↔ (∀ class. tdname∃(str, class) ∧ initdone(class, st) → validstatfields(str, class, st)) ⊦ (∀ class. tdname∃(str, class) ∧ initdone(class, st) → validstatfields(str, class, st)) ↔ (∀ class, sk. tdname∃(str, class) ∧ initdone(class, st) ∧ sk ∈ statfields(class) → validstatfield(str, sk, st))

Rule argument

[crewrite-arg: validstatfields-validstatfield , F , [st, str] → [st, str] ]

Additional information

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