X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Flprs_tc.ma;h=b0602eaa0df48caf79620ec076284a61574d3981;hp=3b031c6d50f6f0c72039284b290e01c7d588d5ef;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lprs_tc.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lprs_tc.ma
index 3b031c6d5..b0602eaa0 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lprs_tc.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/lprs_tc.ma
@@ -21,11 +21,11 @@ include "basic_2/rt_computation/cprs_lpr.ma".
 (* Properties with transitive closure ***************************************)
 
 lemma lprs_TC (h) (G):
-              ∀L1,L2. TC … (lex (λL.cpm h G L 0)) L1 L2 → ⦃G,L1⦄⊢ ➡*[h] L2.
+              ∀L1,L2. TC … (lex (λL.cpm h G L 0)) L1 L2 → ❪G,L1❫⊢ ➡*[h] L2.
 /4 width=3 by lprs_CTC, lex_CTC, lpr_cprs_trans/ qed.
 
 (* Inversion lemmas with transitive closure *********************************)
 
 lemma lprs_inv_TC (h) (G):
-                  ∀L1,L2. ⦃G,L1⦄⊢ ➡*[h] L2 → TC … (lex (λL.cpm h G L 0)) L1 L2.
+                  ∀L1,L2. ❪G,L1❫⊢ ➡*[h] L2 → TC … (lex (λL.cpm h G L 0)) L1 L2.
 /3 width=3 by lprs_inv_CTC, lex_inv_CTC/ qed-.