lambdadelta

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / computation / csn.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/csn.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/csn.ma
index 08709419ce002ad2f121c1603618a654e7ce747c..9aead33d3bc6b710b85b1979d1348b20a2c500f7 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/csn.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/csn.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basic_2/notation/relations/sn_4.ma".
 include "basic_2/reduction/cnx.ma".
 
 (* CONTEXT-SENSITIVE EXTENDED STRONGLY NORMALIZING TERMS ********************)