lean2/tests/lean/exists5.lean
2013-12-17 14:33:42 -08:00

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Text

Variable N : Type
Variables a b c : N
Variables P : N -> N -> N -> Bool
Theorem T1 (f : N -> N) (H : P (f a) b (f (f c))) : exists x y z, P x y z := ExistsIntro _ (ExistsIntro _ (ExistsIntro _ H))
Show Environment 1.