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Proof step 4 from proof instfields-subclass-in (conclusion)

⊦ fs ' ∈ instfields(class) ∧ ty ≤ mkclasstype(class) ∧ is_classtype(ty) → fs ' ∈ instfields(ty .class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
is_classtype(ty), ty ≤ mkclasstype(class), fs ' ∈ instfields(class) ⊦ fs ' ∈ instfields(ty .class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]