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Proof step 1 from proof valid-indices-indiceswhere-h-strong (conclusion)
⊦ n ≤ # ar ∧ m ∈ ar.indicesWhere(φ, n) → m < n
System applied rule normalize
And obtained the following new goals
Proof step 2
:
m ∈ ar.indicesWhere(φ, n), n ≤ # ar ⊦ m < n
Rule argument
Additional information