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Proof step 8 from proof validstatfields-levelsubset (previous step)

level⊆(str, str0), validstatfield(str, sk, st), validstatfields(str, sks0, st), ∀ str, str0, st. level⊆(str, str0) ∧ validstatfields(str, sks0, st) → validstatfields(str0, sks0, st) ⊦ validstatfields(str0, sk ' + sks0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[crewrite-arg: validstatfields-rec , F , [st, sks, sk, str] → [st, sks0, sk, str0] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, sks0, sk, str0)]]