X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Ffsb_aaa.ma;h=5a8d5d2408d9beee1b0d2191349b82e52982cf5d;hb=e90313fa853ba63f29416c2d0de40b13c913e567;hp=2718398739480e9e4c4b4698b2f975c042a524f0;hpb=ff7754f834f937bfe2384c7703cf63f552885395;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_aaa.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_aaa.ma
index 271839873..5a8d5d240 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_aaa.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/fsb_aaa.ma
@@ -16,39 +16,39 @@ include "basic_2/computation/fpbs_aaa.ma".
 include "basic_2/computation/csx_aaa.ma".
 include "basic_2/computation/fsb_csx.ma".
 
-(* "BIG TREE" STRONGLY NORMALIZING TERMS ************************************)
+(* "QRST" STRONGLY NORMALIZING CLOSURES *************************************)
 
 (* Main properties **********************************************************)
 
-(* Note: this is the "big tree" theorem ("small step" version) *)
-theorem aaa_fsb: ∀h,g,G,L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ⦃G, L⦄ ⊢ ⦥[h, g] T.
+(* Note: this is the "big tree" theorem ("RST" version) *)
+theorem aaa_fsb: ∀h,g,G,L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ⦥[h, g] ⦃G, L, T⦄.
 /3 width=2 by aaa_csx, csx_fsb/ qed.
 
-(* Note: this is the "big tree" theorem ("big step" version) *)
-theorem aaa_fsba: ∀h,g,G,L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ⦃G, L⦄ ⊢ ⦥⦥[h, g] T.
+(* Note: this is the "big tree" theorem ("QRST" version) *)
+theorem aaa_fsba: ∀h,g,G,L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → ⦥⦥[h, g] ⦃G, L, T⦄.
 /3 width=2 by fsb_fsba, aaa_fsb/ qed.
 
 (* Advanced eliminators on atomica arity assignment for terms ***************)
 
-fact aaa_ind_fpbu_aux: ∀h,g. ∀R:relation3 genv lenv term.
-                       (∀G1,L1,T1,A. ⦃G1, L1⦄ ⊢ T1 ⁝ A →
-                                     (∀G2,L2,T2. ⦃G1, L1, T1⦄ ≻[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2) →
-                                     R G1 L1 T1
-                       ) →
-                       ∀G,L,T. ⦃G, L⦄ ⊢ ⬊*[h, g] T → ∀A. ⦃G, L⦄ ⊢ T ⁝ A → R G L T.
-#h #g #R #IH #G #L #T #H @(csx_ind_fpbu … H) -G -L -T
+fact aaa_ind_fpb_aux: ∀h,g. ∀R:relation3 genv lenv term.
+                      (∀G1,L1,T1,A. ⦃G1, L1⦄ ⊢ T1 ⁝ A →
+                                    (∀G2,L2,T2. ⦃G1, L1, T1⦄ ≻[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2) →
+                                    R G1 L1 T1
+                      ) →
+                      ∀G,L,T. ⦃G, L⦄ ⊢ ⬊*[h, g] T → ∀A. ⦃G, L⦄ ⊢ T ⁝ A → R G L T.
+#h #g #R #IH #G #L #T #H @(csx_ind_fpb … H) -G -L -T
 #G1 #L1 #T1 #H1 #IH1 #A1 #HTA1 @IH -IH //
 #G2 #L2 #T2 #H12 elim (fpbs_aaa_conf h g … G2 … L2 … T2 … HTA1) -A1
-/2 width=2 by fpbu_fwd_fpbs/
+/2 width=2 by fpb_fpbs/
 qed-.
 
-lemma aaa_ind_fpbu: ∀h,g. ∀R:relation3 genv lenv term.
-                    (∀G1,L1,T1,A. ⦃G1, L1⦄ ⊢ T1 ⁝ A →
-                                  (∀G2,L2,T2. ⦃G1, L1, T1⦄ ≻[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2) →
-                                  R G1 L1 T1
-                    ) →
-                    ∀G,L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → R G L T.
-/4 width=4 by aaa_ind_fpbu_aux, aaa_csx/ qed-.
+lemma aaa_ind_fpb: ∀h,g. ∀R:relation3 genv lenv term.
+                   (∀G1,L1,T1,A. ⦃G1, L1⦄ ⊢ T1 ⁝ A →
+                                 (∀G2,L2,T2. ⦃G1, L1, T1⦄ ≻[h, g] ⦃G2, L2, T2⦄ → R G2 L2 T2) →
+                                 R G1 L1 T1
+                   ) →
+                   ∀G,L,T,A. ⦃G, L⦄ ⊢ T ⁝ A → R G L T.
+/4 width=4 by aaa_ind_fpb_aux, aaa_csx/ qed-.
 
 fact aaa_ind_fpbg_aux: ∀h,g. ∀R:relation3 genv lenv term.
                        (∀G1,L1,T1,A. ⦃G1, L1⦄ ⊢ T1 ⁝ A →