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Proof step 3 from proof fin-inject-embed (previous step)

⊦ n∞ = ∞, ⌜n∞.n⌝ = n∞

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 4:
⊦ n∞ ≠ ∞ → (n = n∞.n ↔ n∞ = ⌜n⌝ )

Rule argument

spec: <toplevel> name: elim seq: ⊦ n∞ ≠ ∞ → (n = n∞.n ↔ n∞ = ⌜n⌝ ) subst: [n∞, n] → [n∞, n] flags: <rotated> <all paths>

Additional information

Used terms: n∞, n