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added Variant theorem flavour
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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