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theorem proved term proof

le_succ

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formal statement (Lean)

 346theorem le_succ (n : LogicNat) : n ≤ succ n := ⟨succ zero, by

proof body

Term-mode proof.

 347  show n + succ zero = succ n
 348  rw [add_succ, add_zero]⟩
 349

used by (7)

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depends on (5)

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