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(* 02110-1301 USA                                                     *)
(****************************************************************************  IEEE754  :  Rpower  Laurent Thery  ***************************************************************************** Definition of an exponential function over relative numbers *)
(* We have already an exponential over natural number, we prove some basic properties for this function *)

Theorem pow_O : forall e : R, (e ^ 0)%R = 1%R.
simpl in |- *; auto with real.