9 lines
255 B
Text
9 lines
255 B
Text
module
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example (x y : Nat) : (x : Int) - (y : Int) = 0 → x = y := by
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grind
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example (x y : Nat) : (x : Int) - (y : Int) ≤ 0 → (x : Int) - (y : Int) ≥ 0 → x = y := by
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grind
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example (x y : Nat) : (x : Int) = (y : Int) → x = y := by
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grind
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