X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Frelocation%2Flex_tc.ma;h=2f86bf51cb80d4dcf65f0848172917c8077b25aa;hb=55c768d7e45babb300b5010463ba3196a68f1bbe;hp=5dadd4e18a1be9abf4bf58069d599c91eca92778;hpb=15212e44902f25536f6e2de4bec4cedcd9a9804d;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/static_2/relocation/lex_tc.ma b/matita/matita/contribs/lambdadelta/static_2/relocation/lex_tc.ma
index 5dadd4e18..2f86bf51c 100644
--- a/matita/matita/contribs/lambdadelta/static_2/relocation/lex_tc.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/relocation/lex_tc.ma
@@ -46,7 +46,7 @@ qed-.
 lemma lex_CTC (R): s_rs_transitive … R (λ_. lex R) →
                    TC … (lex R) ⊆ lex (CTC … R).
 #R #HR #L1 #L2 #HL12
-lapply (monotonic_TC … (sex cfull (cext2 R) 𝐈𝐝) … HL12) -HL12
+lapply (monotonic_TC … (sex cfull (cext2 R) 𝐢) … HL12) -HL12
 [ #L1 #L2 * /3 width=3 by sex_eq_repl_fwd, eq_id_inv_isid/
 | /5 width=9 by s_rs_transitive_lex_inv_isid, sex_tc_dx, sex_co, ext2_tc, ex2_intro/
 ]