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Proof step 1 from proof set2set (conclusion)

⊦ list2set(set2list(s)) = s

User applied rule induction

And obtained the following new goals

Proof step 2:
true, ∀ s0. # s0 < # s → true → list2set(set2list(s0)) = s0 ⊦ list2set(set2list(s)) = s

Rule argument

indvar: # s wfpred: <

Additional information

Used simplifier rules: <; (wellfounded) Used terms: # s