milestone in basic_2 with additions in static_2

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / dynamic / cnv_cpme.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpme.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpme.ma
index dd3d99a308c1c8cf9c6a906d001b49d6ab09f8f5..be0443bca6b90a7c39ee7cb6ea80ec2745b1be67 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpme.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpme.ma
@@ -20,6 +20,13 @@ include "basic_2/dynamic/cnv_preserve.ma".
 
 (* Properties with evaluation for t-bound rt-transition on terms ************)
 
+lemma cnv_cpme_trans (a) (h) (n) (G) (L):
+      ∀T1. ⦃G,L⦄ ⊢ T1 ![a,h] →
+      ∀T2. ⦃G,L⦄ ⊢ T1 ➡*[h,n] 𝐍⦃T2⦄ → ⦃G,L⦄ ⊢ T2 ![a,h].
+#a #h #n #G #L #T1 #HT1 #T2 * #HT12 #_
+/2 width=4 by cnv_cpms_trans/
+qed-.
+
 lemma cnv_cpme_cpms_conf (a) (h) (n) (G) (L):
       ∀T. ⦃G,L⦄ ⊢ T ![a,h] → ∀T1. ⦃G,L⦄ ⊢ T ➡*[n,h] T1 →
       ∀T2. ⦃G,L⦄ ⊢ T ➡*[h,n] 𝐍⦃T2⦄ → ⦃G,L⦄ ⊢ T1 ➡*[h] 𝐍⦃T2⦄.