[ O \Rightarrow O
| (S p) \Rightarrow m+(times p m) ].
-(*CSC: the URI must disappear: there is a bug now *)
-interpretation "natural times" 'times x y = (cic:/matita/library_autobatch/nat/times/times.con x y).
+interpretation "natural times" 'times x y = (times x y).
theorem times_n_O: \forall n:nat. O = n*O.
intros.elim n