helm/matita/tests/discriminate.ma

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  14
  15 set "baseuri" "cic:/matita/tests/discriminate".
  16 alias id "not" = "cic:/Coq/Init/Logic/not.con".
  17 alias num (instance 0) = "natural number".
  18 alias symbol "eq" (instance 0) = "leibnitz's equality".
  19
  20
  21 theorem stupid:
  22   1 = 0 \to (\forall p:Prop. p \to not p).
  23   intros.
  24   discriminate H.
  25   qed.
  26