helm/matita/tests/clear.ma

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   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
   6 (*      ||I||       Developers:                                           *)
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  10 (*       \ /        This file is distributed under the terms of the       *)
  11 (*        v         GNU General Public License Version 2                  *)
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  14
  15 set "baseuri" "cic:/matita/tests/clear".
  16 alias num (instance 0) = "natural number".
  17 alias symbol "eq" (instance 0) = "leibnitz's equality".
  18 alias id "True" = "cic:/Coq/Init/Logic/True.ind#xpointer(1/1)".
  19
  20
  21
  22 theorem stupid:
  23   \forall a: True.
  24   \forall b: 0 = 0.
  25   0 = 0.
  26 intros 1 [H] .
  27 clear H.
  28 intros 1 [H].
  29 exact H.
  30 qed.
  31