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Proof step 1 from proof nodups-new (conclusion)

# ax0 = # ndx0 ⊦ ¬ dups(ax0) ∧ ¬ dups(ax1) ∧ new(ax1, fs1) ∧ fs1 = fs0[ax0, ndx0] → ¬ dups(ax0 + ax1)

System applied rule normalize

And obtained the following new goals

Rule argument

Additional information