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Proof step 14 from proof nodups-numoc (previous step)

nodups(A) ⊦ #oc(n, A, # A) = 1, #oc(n, A, # A) = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ nodups(A) ↔ (∀ m, m0. m ≠ m0 ∧ m < # A ∧ m0 < # A → A[m] ≠ A[m0])

Rule argument

spec: inst: name:nodups-def seq: ⊦ nodups(A) ↔ (∀ m, m0. m ≠ m0 ∧ m < # A ∧ m0 < # A → A[m] ≠ A[m0]) subst:[A] → [A] flags:rewrite, current

Additional information

[Concretesimprules(()), Extraterms((A))]