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Proof step 8 from proof to-unwind-end-inf (previous step)

∀ nf. nf to m0 + 1 = (nf to m0) + nf(m0) ' ⊦ (λ n. nf(n + 1)) to m0 + 1 = ((λ n. nf(n + 1)) to m0) + nf(m0 + 1) '

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 1 terms: λ n. nf(n + 1)

Additional information

Used terms: λ n. nf(n + 1)