10 lines
185 B
Text
10 lines
185 B
Text
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def fib : Nat → Nat
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| 0 => 1
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| 1 => 1
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| n+2 => fib n + fib (n+1)
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example : fib 0 = 1 := rfl
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example : fib 1 = 1 := rfl
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example (n : Nat) : fib (n+2) = fib n + fib (n+1) := rfl
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