lfsx_lfpxs completed!

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / rt_transition / lfpx_fqup.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_fqup.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_fqup.ma
index 99e668266e2c4a12bbc63991427918879a89bff6..2967a62bb2bfc2b9cd240b9221321d5e91d61998 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_fqup.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_fqup.ma
@@ -19,5 +19,11 @@ include "basic_2/rt_transition/lfpx.ma".
 
 (* Advanced properties ******************************************************)
 
+(* Basic_2A1: uses: lpx_refl lpx_pair *)
 lemma lfpx_refl: ∀h,G,T. reflexive … (lfpx h G T).
 /2 width=1 by lfxs_refl/ qed.
+
+(* Basic_2A1: uses: lpx_refl lpx_pair *)
+lemma lfpx_pair: ∀h,G,L,V1,V2. ⦃G, L⦄ ⊢ V1 ⬈[h] V2 →
+                 ∀I,T. ⦃G, L.ⓑ{I}V1⦄ ⊢ ⬈[h, T] L.ⓑ{I}V2.
+/2 width=1 by lfxs_pair/ qed.