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Proof step 43 from proof stutf-maxinf-is-fin (previous step)

∀ n0. ⌜n0⌝ < # nσ → nσ[n0] < nσ[n], ⌜n⌝ < # nσ, stutf(nσ) ⊦ ∃ n1. n0 < n1 ∧ ⌜n1⌝ < # nσ ∧ nσ[n1] = nσ[n]

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 1 terms: n

Additional information

Used simplifier rules: ref-1: ⊦ ¬ n < n; from specification nat-basic1 Used terms: n