exercises ready

[helm.git] / helm / software / matita / library / nat / sigma_and_pi.ma

diff --git a/helm/software/matita/library/nat/sigma_and_pi.ma b/helm/software/matita/library/nat/sigma_and_pi.ma
index fe3a2d8b5d417502ac99e5572a1a759a7e448bba..10727ed3ee492295f1e2414dc49bb2c548624532 100644 (file)
--- a/helm/software/matita/library/nat/sigma_and_pi.ma
+++ b/helm/software/matita/library/nat/sigma_and_pi.ma
@@ -12,10 +12,9 @@
 (*                                                                        *)
 (**************************************************************************)
 
-set "baseuri" "cic:/matita/nat/sigma_and_pi".
-
 include "nat/factorial.ma".
 include "nat/exp.ma".
+include "nat/lt_arith.ma".
 
 let rec sigma n f m \def
   match n with