12 lines
229 B
Text
12 lines
229 B
Text
import standard
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using tactic (renaming id->id_tac)
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definition id {A : Type} (a : A) := a
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definition simple {A : Bool} : tactic
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:= unfold @id.{1}; exact
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theorem tst {A B : Bool} (H1 : A) (H2 : B) : id A
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:= by simple
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check tst
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