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Proof step 32 from proof nextnli-lemma (previous step)

⊦ ∃ lf. lf(0) = x ∧ (∀ m. m < n → lf(m + 1) = nextnli(lf(m), m)), ∃ lf. lf(0) = x ∧ (∀ n. lf(n + 1) = nextnli(lf(n), n))

User applied rule weakening

And obtained the following new goals

Proof step 33:
⊦ ∃ lf. lf(0) = x ∧ (∀ m. m < n → lf(m + 1) = nextnli(lf(m), m))

Rule argument

poslist: right 2

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