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Proof step 7 from proof isarray-subset (previous step)

st[r -- _type] = typeval(mkarraytype(ty)), r ∈ st, ∀ rk. rk ∈ st → rk ∈ st1 ∧ st[rk] = st1[rk], okarray(r, ty, st), r -- _type ∈ st, r ∈ st1, okarray(r, ty, st1) ⊦ r = jvmref, r -- _type ∈ st1 ∧ is_typevalue(st1[r -- _type]) ∧ is_arraytype(st1[r -- _type] .type) ∧ okarray(r, st1[r -- _type] .type .type, st1)

User applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 3, [extquanttermlist: (r -- _type) abort:F , discard:F , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st], [CSIMPSEQ : ⊦ is_typevalue(typeval(ty))], [CSIMPSEQ : ⊦ typeval(ty) .type = ty], [CSIMPSEQ : ⊦ is_arraytype(mkarraytype(ty))], [CSIMPSEQ : ⊦ mkarraytype(ty) .type = ty])], [EXTRATERMS : (r -- _type)]]