X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcpr_drops.ma;h=714ce2f458f4b5325faf3952d21e3dbbb8f28fde;hb=747b42f3b9aac5487047f57742f1fcf05b56b57d;hp=c7c28703669fb4fde68ed1cc7cdde314bcef77ab;hpb=5a81feec7b8c07a43e96d772431e06bad177ed8c;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops.ma
index c7c287036..714ce2f45 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr_drops.ma
@@ -20,26 +20,26 @@ include "basic_2/rt_transition/cpm_drops.ma".
 
 (* Basic_2A1: includes: cpr_inv_atom1 *)
 lemma cpr_inv_atom1_drops: ∀h,I,G,L,T2. ⦃G, L⦄ ⊢ ⓪{I} ➡[h] T2 →
-                           T2 = ⓪{I} ∨
-                           ∃∃K,V,V2,i. ⬇*[i] L ≡ K.ⓓV & ⦃G, K⦄ ⊢ V ➡[h] V2 &
-                                       ⬆*[⫯i] V2 ≡ T2 & I = LRef i.
+                           ∨∨ T2 = ⓪{I}
+                            | ∃∃K,V,V2,i. ⬇*[i] L ≡ K.ⓓV & ⦃G, K⦄ ⊢ V ➡[h] V2 &
+                                          ⬆*[⫯i] V2 ≡ T2 & I = LRef i.
 #h #I #G #L #T2 #H elim (cpm_inv_atom1_drops … H) -H *
 [ /2 width=1 by or_introl/
 | #s #_ #_ #H destruct
 | /3 width=8 by ex4_4_intro, or_intror/
-| #k #K #V1 #V2 #i #_ #_ #_ #_ #H destruct
+| #m #K #V1 #V2 #i #_ #_ #_ #_ #H destruct
 ]
 qed-.
 
 (* Basic_1: includes: pr0_gen_lref pr2_gen_lref *)
 (* Basic_2A1: includes: cpr_inv_lref1 *)
 lemma cpr_inv_lref1_drops: ∀h,G,L,T2,i. ⦃G, L⦄ ⊢ #i ➡[h] T2 →
-                           T2 = #i ∨
-                           ∃∃K,V,V2. ⬇*[i] L ≡ K. ⓓV & ⦃G, K⦄ ⊢ V ➡[h] V2 &
-                                     ⬆*[⫯i] V2 ≡ T2.
+                           ∨∨ T2 = #i
+                            | ∃∃K,V,V2. ⬇*[i] L ≡ K. ⓓV & ⦃G, K⦄ ⊢ V ➡[h] V2 &
+                                        ⬆*[⫯i] V2 ≡ T2.
 #h #G #L #T2 #i #H elim (cpm_inv_lref1_drops … H) -H *
 [ /2 width=1 by or_introl/
 | /3 width=6 by ex3_3_intro, or_intror/
-| #k #K #V1 #V2 #_ #_ #_ #H destruct
+| #m #K #V1 #V2 #_ #_ #_ #H destruct
 ]
 qed-.