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Proof step 3 from proof mklist-rmdup-01 (previous step)

⊦ n = 0, rmdup(mklist(a, n)) = a '

User applied rule structural induction

And obtained the following new goals

Proof step 4:
∀ a. n0 = 0 ∨ rmdup(mklist(a, n0)) = a ' ⊦ n0 +1 = 0, rmdup(mklist(a, n0 +1)) = a '

Rule argument

indvar: n

Additional information

Used simplifier rules: nat freely generated by 0, +1;;