arithmetics for λδ

[helm.git] / matita / matita / contribs / lambdadelta / ground / arith / pnat_plus.ma

diff --git a/matita/matita/contribs/lambdadelta/ground/arith/pnat_plus.ma b/matita/matita/contribs/lambdadelta/ground/arith/pnat_plus.ma
index c5c6ade72cc63a23b7e66a659590000f3cc2e327..1babf8eea5ea43544d48c15efe6894d50c7fca4d 100644 (file)
--- a/matita/matita/contribs/lambdadelta/ground/arith/pnat_plus.ma
+++ b/matita/matita/contribs/lambdadelta/ground/arith/pnat_plus.ma
@@ -43,7 +43,7 @@ qed.
 
 lemma pplus_comm: commutative … pplus.
 #p elim p -p //
-qed-.
+qed-. (**) (* gets in the way with auto *)
 
 lemma pplus_assoc: associative … pplus.
 #p #q #r elim r -r //