X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fground%2Frelocation%2Fnap.ma;h=a5ab2dcb79ee66d5e70a91ac731e4b18968b7f79;hb=afb5d82d388986bbeb17a4f114aebbaafc948f93;hp=ac32304ed352d6fd996c64900ead586effd36fe2;hpb=084fe5719d41ce13be068050fbade488d4a183ee;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/nap.ma b/matita/matita/contribs/lambdadelta/ground/relocation/nap.ma
index ac32304ed..a5ab2dcb7 100644
--- a/matita/matita/contribs/lambdadelta/ground/relocation/nap.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/nap.ma
@@ -1,5 +1,6 @@
 include "ground/relocation/tr_uni_pap.ma".
 include "ground/relocation/tr_compose_pap.ma".
+include "ground/relocation/tr_pap_eq.ma".
 include "ground/notation/functions/applysucc_2.ma".
 include "ground/arith/nat_lt.ma".
 include "ground/arith/nat_plus_rplus.ma".
@@ -53,3 +54,10 @@ lemma tr_nap_pushs_lt (f) (n) (m):
 <tr_nap_unfold <tr_pap_pushs_le
 /2 width=1 by nlt_npsucc_bi/
 qed-.
+
+theorem tr_nap_eq_repl (i):
+        stream_eq_repl … (λf1,f2. f1@↑❨i❩ = f2@↑❨i❩).
+#i #f1 #f2 #Hf
+<tr_nap_unfold <tr_nap_unfold
+/3 width=1 by tr_pap_eq_repl, eq_f/
+qed.