update in groud_2 and models

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

diff --git a/helm/software/matita/library/nat/count.ma b/helm/software/matita/library/nat/count.ma
index 2abcf25c3b1f43245c61bd8d7d046c663b1a259d..73e251bf6b35929353622914eb364e393ad85a5f 100644 (file)
--- a/helm/software/matita/library/nat/count.ma
+++ b/helm/software/matita/library/nat/count.ma
@@ -12,8 +12,6 @@
 (*                                                                        *)
 (**************************************************************************)
 
-set "baseuri" "cic:/matita/nat/count".
-
 include "nat/relevant_equations.ma".
 include "nat/sigma_and_pi.ma".
 include "nat/permutation.ma".
@@ -35,7 +33,7 @@ theorem sigma_plus: \forall n,p,m:nat.\forall f:nat \to nat.
 sigma (S (p+n)) f m = sigma p (\lambda x.(f ((S n) + x))) m + sigma n f m.
 intros. elim p.
 simplify.
-rewrite < (sym_plus n m).reflexivity.
+reflexivity.
 simplify.
 rewrite > assoc_plus in \vdash (? ? ? %).
 rewrite < H.