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Proof step 6 from proof all-classes (previous step)

∀ rks. ∃ class. ∀ r, ty, fieldvar. ¬ r -- mkfs(class, ty, fieldvar) ' ∈ rks, ∀ class. ∃ r, ty, fieldvar. r -- mkfs(class, ty, fieldvar) ' ∈ st ⊦

User applied rule all left

And obtained the following new goals

Proof step 5:
∃ class. ∀ r, ty, fieldvar. ¬ r -- mkfs(class, ty, fieldvar) ' ∈ st .keys, ∀ class. ∃ r, ty, fieldvar. r -- mkfs(class, ty, fieldvar) ' ∈ st ⊦

Rule argument

[EXRARG : pos: left 1, [extquanttermlist: (st .keys)abort:F, discard:T, computed:F]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st .keys)]]