9 lines
170 B
Text
9 lines
170 B
Text
import tools.tactic logic.eq
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open tactic
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theorem foo (A : Type) (a b c : A) (Hab : a = b) (Hbc : b = c) : a = c :=
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begin
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apply eq.trans,
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apply Hab,
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apply Hbc,
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end
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