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Proof step 5 from proof isarray-put-samefield-01 (
previous step
)
⊦ r -- fs ' ∈ st ∧ oktype(st[r -- fs '], fs .type, st) ∧ oktype(val, fs .type, st) ∧ fs ' ≠ _type ∧ fs ' ≠ _length → (okarray(r, ty, st[r -- fs ', val]) ↔ okarray(r, ty, st))
Lemma
okarray-put-samefield-01