matita/matita/tests/cut.ma

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  14
  15
  16 include "coq.ma".
  17 alias num (instance 0) = "natural number".
  18 alias symbol "eq" (instance 0) = "Coq's leibnitz's equality".
  19
  20 theorem stupid: 3 = 3.
  21   cut (3 = 3).
  22   assumption.
  23   reflexivity.
  24 qed.
  25