7 lines
227 B
Text
7 lines
227 B
Text
exit
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example (a b c : nat) (H₁ : a = b) (H₂ : b = c) : a = c :=
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proof eq.trans H₁ _ qed
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example (a b c : nat) (H₁ : a = b) (H₂ : b = c) : a = c :=
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have aux : c = a, proof eq.trans _ (eq.symm H₁) qed,
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(eq.symm aux)
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