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Proof step 1 from proof valid-eraseq-map-indices-nostatchange (conclusion)

⊦ valid-eraseq(wlar, q) ∧ (∀ wle. f(wle).status = wle.status) ∧ valid-indices(wlar, nx) ∧ ¬ dups(nx) → valid-eraseq(wlar.mapIndices(nx, f), q)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information