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Proof step 19 from proof contains-subex (previous step)

contains(str0, ty, ty0), ∀ class1. contains(str0, ty, mkclasstype(class1)) → tdname+∃(str, class1) ⊦ ¬ has_classtype(ty0) ∨ tdname+∃(str, ty0 .jtclass)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
has_classtype(ty0), contains(str0, ty, ty0), ∀ class1. contains(str0, ty, mkclasstype(class1)) → tdname+∃(str, class1) ⊦ tdname+∃(str, ty0 .jtelemtype .class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ty .jtclass = ty .jtelemtype .class])]]