update in ground and delayed_updating

[helm.git] / matita / matita / contribs / lambdadelta / ground / relocation / tr_uni_compose.ma

diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/tr_uni_compose.ma b/matita/matita/contribs/lambdadelta/ground/relocation/tr_uni_compose.ma
index 2343c74ac0ae022fe5cc38a8def8ecdb3972da45..abae78a7e74e436ca00059267e3e200993e0daaf 100644 (file)
--- a/matita/matita/contribs/lambdadelta/ground/relocation/tr_uni_compose.ma
+++ b/matita/matita/contribs/lambdadelta/ground/relocation/tr_uni_compose.ma
@@ -19,6 +19,13 @@ include "ground/lib/stream_hdtl_eq.ma".
 
 (* UNIFORM ELEMENTS FOR TOTAL RELOCATION MAPS *******************************)
 
+(* Constructions with tr_compose and tr_next ********************************)
+
+lemma tr_compose_uni_unit_sn (f):
+      ↑f ≗ 𝐮❨𝟏❩∘f.
+#f >nsucc_zero <tr_uni_succ //
+qed.
+
 (* Constructions with tr_compose and tr_tl **********************************)
 
 lemma tr_tl_compose_uni_sn (n) (f):