update in groud_2 and models

[helm.git] / helm / software / matita / library / Q / frac.ma

diff --git a/helm/software/matita/library/Q/frac.ma b/helm/software/matita/library/Q/frac.ma
index e4a2fc566408232e58f32a1d6d3c5ef854bce93b..863efe2833be3770cc257551e5863de628d6566f 100644 (file)
--- a/helm/software/matita/library/Q/frac.ma
+++ b/helm/software/matita/library/Q/frac.ma
@@ -12,6 +12,8 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "Q/q/qinv.ma".
+
 (*
 let rec nat_fact_to_fraction_inv l \def
   match l with