2 lines
90 B
Text
2 lines
90 B
Text
protected definition nat.add : ℕ → ℕ → ℕ :=
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λ a, nat.rec a (λ b₁, nat.succ)
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protected definition nat.add : ℕ → ℕ → ℕ :=
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λ a, nat.rec a (λ b₁, nat.succ)
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