helm/software/matita/contribs/prova.ma

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  14
  15 set "baseuri" "cic:/matita/test/".
  16
  17 include "nat/nat.ma".
  18
  19 theorem pippo: \forall (P,Q,R:nat \to Prop).
  20                \forall x,y. x=y \to P x \to Q x \to R x.
  21                intros.
  22                rewrite > P in Q.
  23 (*
  24 theorem pippo: \forall (P,Q,R:nat \to Prop).
  25                \forall x,y. x=y \to P x \to Q x \to R x.
  26                intros. rewrite > H in y.
  27 *)