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Proof step 4 from proof lebrefs-none (previous step)

⊦ # (eq-entry(n, none) + []).lebrefs = 0, (eq-entry(n, none) + []).lebrefs = ∅

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ eqent + q = eqent ' + q
Proof step 6:
⊦ # (eq-entry(n, none) ' + []).lebrefs = 0, (eq-entry(n, none) ' + []).lebrefs = ∅

Rule argument

spec: list, inst: erasequeue-base name: c seq: ⊦ eqent + q = eqent ' + q subst: [q, eqent] → [[], eq-entry(n, none)] flags: <all paths>

Additional information

Used terms: [], eq-entry(n, none)