X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Flfpx_lpx.ma;h=a616027336b4306029108d72855f7b7effa4de02;hp=034ce9c7e938a8ab52a423c20cff19fa459bfe12;hb=268e7f336d036f77ffc9663358e9afda92b97730;hpb=1604f2ee65c57eefb7c6b3122eab2a9f32e0552d

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_lpx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_lpx.ma
index 034ce9c7e..a61602733 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_lpx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_lpx.ma
@@ -26,5 +26,5 @@ lemma lfpx_lpx: ∀h,G,L1,L2,T. ⦃G, L1⦄ ⊢ ⬈[h] L2 → ⦃G, L1⦄ ⊢ 
 (* Inversion lemmas with uncounted parallel rt-transition for local envs ****)
 
 lemma lfpx_inv_lpx_lfeq: ∀h,G,L1,L2,T. ⦃G, L1⦄ ⊢ ⬈[h, T] L2 →
-                         ∃∃L. ⦃G, L1⦄ ⊢ ⬈[h] L & L ≡[T] L2.
+                         ∃∃L. ⦃G, L1⦄ ⊢ ⬈[h] L & L ≐[T] L2.
 /3 width=3 by lfpx_fsge_comp, lfxs_inv_lex_lfeq/ qed-.