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Proof step 22 from proof okarrays-put (conclusion)

⊦ sk ≠ _type ∧ goodfieldandtype(r0, sk, st) ∧ oktype(val, sk .fs .type, st) ∧ ¬ sk ∈ fis ∧ sk ≠ _length → (okarrays(r, fis, st[r0 -- sk, val]) ↔ okarrays(r, fis, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 21:
oktype(val, sk .fs .type, st), goodfieldandtype(r0, sk, st) ⊦ sk = _type, sk = _length, okarrays(r, fis, st[r0 -- sk, val]) ↔ okarrays(r, fis, st), sk ∈ fis

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]