9 lines
180 B
Text
9 lines
180 B
Text
import logic
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open tactic (renaming id->id_tac)
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infixl `;`:15 := tactic.and_then
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theorem tst {A B : Prop} (H1 : A) (H2 : B) : id A
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:= by (unfold id; state); assumption
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check tst
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