10 lines
228 B
Text
10 lines
228 B
Text
set_option new_elaborator true
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definition 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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