1 files changed, 20 insertions, 0 deletions
diff --git a/theories/Reals/SplitRmult.v b/theories/Reals/SplitRmult.v
new file mode 100644
index 00000000..19df2afa
--- /dev/null
+++ b/theories/Reals/SplitRmult.v
@@ -0,0 +1,20 @@
+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+(*i $Id: SplitRmult.v,v 1.7.2.1 2004/07/16 19:31:15 herbelin Exp $ i*)
+
+(*i Lemma mult_non_zero :(r1,r2:R)``r1<>0`` /\ ``r2<>0`` -> ``r1*r2<>0``. i*)
+
+
+Require Import Rbase.
+
+Ltac split_Rmult :=
+  match goal with
+  |  |- ((?X1 * ?X2)%R <> 0%R) =>
+      apply Rmult_integral_contrapositive; split; try split_Rmult
+  end.