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Proof step 2 from proof extensionality-to (previous step)

# σ0 = # σ1, ∀ n. ¬ # σ1 < ⌜n⌝ → σ0 to n = σ1 to n ⊦ σ0 = σ1

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

spec: stream inst: name: extensionality seq: ⊦ σ0 = σ1 ↔ # σ0 = # σ1 ∧ (∀ n. ⌜n⌝ < # σ0 → σ0[n] = σ1[n]) subst: [σ1, σ0] → [σ1, σ0] flags: rewrite, current

Additional information

Used terms: σ1, σ0