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Proof step 1 from proof to-adrs-drop (conclusion)

⊦ dropn(n, lax.to-adr(m)) = dropn(n, lax).to-adr(m)

User applied rule structural induction

And obtained the following new goals

Proof step 2:
∀ n, m. dropn(n, lax0.to-adr(m)) = dropn(n, lax0).to-adr(m) ⊦ dropn(n, (ladr + lax0).to-adr(m)) = dropn(n, ladr + lax0).to-adr(m)

Rule argument

indvar: lax

Additional information

Used simplifier rules: adrs-empty: ⊦ ([]).to-adr(n) = [];%laddress-list freely generated by [], +;;% ⊦ dropn(n, []) = []; (s)% ⊦ dropn(n, []) = []; (s)