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Proof step 24 from proof subset-okarray (previous step)

st[r -- _type] = typeval(mkarraytype(ty0)), st0[r -- _length] = intval(i), st0[r -- _type] = typeval(mkarraytype(ty0)), st[r -- _length] = intval(i), j < i, r -- _type ∈ st0, r ∈ st, ty0 ≤ ty, r -- _type ∈ st, is_arrayref(r, i, st), r -- _length ∈ st, 0 ≤ i, r -- _length ∈ st0, r ∈ st0, 0 ≤ j, 0 < i, okval(st[r -- j '], ty), ∀ rk. rk ∈ st → rk ∈ st0 ∧ st[rk] = st0[rk] ⊦ r = jvmref, okval(st0[r -- j '], ty)

User applied rule all left

And obtained the following new goals

Rule argument

[EXRARG : pos: left 18, [extquanttermlist: (r -- j ')abort:F, discard:T, computed:F]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r -- j ')]]