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Proof step 74 from proof inv-get-inverse-succ (
previous step
)
⊦ stutf(nσ) ∧ ⌜m⌝ < # nσ ∧ n ≤ nσ[m] → (∃ m0. m0 ≤ m ∧ nσ[m0] = n)
Lemma
stutf-alltaken