X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fstatic%2Flfdeq.ma;h=47c5a38bad397caf4b5467d31d24b87b76853921;hb=397413c4196f84c81d61ba7dd79b54ab1c428ebb;hp=98b9314459dc725b63eb3a3a8b0784e806783d86;hpb=24ba1bb3f67505d3e384747ff90d26d3996bd3f5;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/static/lfdeq.ma b/matita/matita/contribs/lambdadelta/basic_2/static/lfdeq.ma
index 98b931445..47c5a38ba 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/static/lfdeq.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/static/lfdeq.ma
@@ -106,7 +106,7 @@ lemma lfdeq_unit: ∀h,o,f,I,L1,L2. 𝐈⦃f⦄ → L1 ⪤*[cdeq_ext h o, cfull,
 /2 width=3 by lfxs_unit/ qed.
 *)
 lemma lfdeq_lref: ∀h,o,I1,I2,L1,L2,i.
-                  L1 ≛[h, o, #i] L2 → L1.ⓘ{I1} ≛[h, o, #⫯i] L2.ⓘ{I2}.
+                  L1 ≛[h, o, #i] L2 → L1.ⓘ{I1} ≛[h, o, #↑i] L2.ⓘ{I2}.
 /2 width=1 by lfxs_lref/ qed.
 
 (* Basic_2A1: uses: lleq_gref *)
@@ -138,7 +138,7 @@ lemma lfdeq_inv_zero: ∀h,o,Y1,Y2. Y1 ≛[h, o, #0] Y2 →
 /3 width=9 by or3_intro0, or3_intro1, or3_intro2, ex4_5_intro, ex4_4_intro, conj/
 qed-.
 *)
-lemma lfdeq_inv_lref: ∀h,o,Y1,Y2,i. Y1 ≛[h, o, #⫯i] Y2 →
+lemma lfdeq_inv_lref: ∀h,o,Y1,Y2,i. Y1 ≛[h, o, #↑i] Y2 →
                       (Y1 = ⋆ ∧ Y2 = ⋆) ∨
                       ∃∃I1,I2,L1,L2. L1 ≛[h, o, #i] L2 &
                                      Y1 = L1.ⓘ{I1} & Y2 = L2.ⓘ{I2}.
@@ -164,11 +164,11 @@ lemma lfdeq_inv_zero_pair_dx: ∀h,o,I,Y1,L2,V2. Y1 ≛[h, o, #0] L2.ⓑ{I}V2 
                               ∃∃L1,V1. L1 ≛[h, o, V1] L2 & V1 ≛[h, o] V2 & Y1 = L1.ⓑ{I}V1.
 /2 width=1 by lfxs_inv_zero_pair_dx/ qed-.
 
-lemma lfdeq_inv_lref_bind_sn: ∀h,o,I1,Y2,L1,i. L1.ⓘ{I1} ≛[h, o, #⫯i] Y2 →
+lemma lfdeq_inv_lref_bind_sn: ∀h,o,I1,Y2,L1,i. L1.ⓘ{I1} ≛[h, o, #↑i] Y2 →
                               ∃∃I2,L2. L1 ≛[h, o, #i] L2 & Y2 = L2.ⓘ{I2}.
 /2 width=2 by lfxs_inv_lref_bind_sn/ qed-.
 
-lemma lfdeq_inv_lref_bind_dx: ∀h,o,I2,Y1,L2,i. Y1 ≛[h, o, #⫯i] L2.ⓘ{I2} →
+lemma lfdeq_inv_lref_bind_dx: ∀h,o,I2,Y1,L2,i. Y1 ≛[h, o, #↑i] L2.ⓘ{I2} →
                               ∃∃I1,L1. L1 ≛[h, o, #i] L2 & Y1 = L1.ⓘ{I1}.
 /2 width=2 by lfxs_inv_lref_bind_dx/ qed-.