X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Farith%2Fynat_nat.ma;h=172d8cf2ac206801dd7d0f27179bba48d7cab3b8;hb=4d232392091ee233afc26ecf3120dd5f5c6a33c8;hp=decfe5918bbcdd66f483309bae167e17db4d5795;hpb=888840f6b3a71d3d686b53b702d362ab90ab0038;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/arith/ynat_nat.ma b/matita/matita/contribs/lambdadelta/ground/arith/ynat_nat.ma
index decfe5918..172d8cf2a 100644
--- a/matita/matita/contribs/lambdadelta/ground/arith/ynat_nat.ma
+++ b/matita/matita/contribs/lambdadelta/ground/arith/ynat_nat.ma
@@ -15,7 +15,7 @@
 include "ground/arith/nat.ma".
 include "ground/arith/ynat.ma".
 
-(* NON-NEGATIVE INTEGERS TO NON-NEGATIVE INTEGERS WITH INFINITY *************)
+(* NAT-INJECTION FOR NON-NEGATIVE INTEGERS WITH INFINITY ********************)
 
 (*** yinj *)
 definition yinj_nat (n) ≝ match n with