X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_1%2Fdrop1%2Ffwd.ma;h=3195918959af365def7b86753c8411be4f649020;hp=606c71d8148ec7ca96d143ed0fe29cdee3515f5d;hb=57ae1762497a5f3ea75740e2908e04adb8642cc2;hpb=7b95759c5011a25f96d5171561ea79d063770db4

diff --git a/matita/matita/contribs/lambdadelta/basic_1/drop1/fwd.ma b/matita/matita/contribs/lambdadelta/basic_1/drop1/fwd.ma
index 606c71d81..319591895 100644
--- a/matita/matita/contribs/lambdadelta/basic_1/drop1/fwd.ma
+++ b/matita/matita/contribs/lambdadelta/basic_1/drop1/fwd.ma
@@ -16,81 +16,66 @@
 
 include "basic_1/drop1/defs.ma".
 
-let rec drop1_ind (P: (PList \to (C \to (C \to Prop)))) (f: (\forall (c: 
-C).(P PNil c c))) (f0: (\forall (c1: C).(\forall (c2: C).(\forall (h: 
-nat).(\forall (d: nat).((drop h d c1 c2) \to (\forall (c3: C).(\forall (hds: 
-PList).((drop1 hds c2 c3) \to ((P hds c2 c3) \to (P (PCons h d hds) c1 
-c3))))))))))) (p: PList) (c: C) (c0: C) (d: drop1 p c c0) on d: P p c c0 \def 
-match d with [(drop1_nil c1) \Rightarrow (f c1) | (drop1_cons c1 c2 h d0 d1 
-c3 hds d2) \Rightarrow (let TMP_1 \def ((drop1_ind P f f0) hds c2 c3 d2) in 
-(f0 c1 c2 h d0 d1 c3 hds d2 TMP_1))].
+implied rec lemma drop1_ind (P: (PList \to (C \to (C \to Prop)))) (f: 
+(\forall (c: C).(P PNil c c))) (f0: (\forall (c1: C).(\forall (c2: 
+C).(\forall (h: nat).(\forall (d: nat).((drop h d c1 c2) \to (\forall (c3: 
+C).(\forall (hds: PList).((drop1 hds c2 c3) \to ((P hds c2 c3) \to (P (PCons 
+h d hds) c1 c3))))))))))) (p: PList) (c: C) (c0: C) (d: drop1 p c c0) on d: P 
+p c c0 \def match d with [(drop1_nil c1) \Rightarrow (f c1) | (drop1_cons c1 
+c2 h d0 d1 c3 hds d2) \Rightarrow (f0 c1 c2 h d0 d1 c3 hds d2 ((drop1_ind P f 
+f0) hds c2 c3 d2))].
 
-theorem drop1_gen_pnil:
+lemma drop1_gen_pnil:
  \forall (c1: C).(\forall (c2: C).((drop1 PNil c1 c2) \to (eq C c1 c2)))
 \def
- \lambda (c1: C).(\lambda (c2: C).(\lambda (H: (drop1 PNil c1 c2)).(let TMP_1 
-\def (\lambda (p: PList).(drop1 p c1 c2)) in (let TMP_2 \def (\lambda (_: 
-PList).(eq C c1 c2)) in (let TMP_9 \def (\lambda (y: PList).(\lambda (H0: 
-(drop1 y c1 c2)).(let TMP_3 \def (\lambda (p: PList).(\lambda (c: C).(\lambda 
-(c0: C).((eq PList p PNil) \to (eq C c c0))))) in (let TMP_4 \def (\lambda 
-(c: C).(\lambda (_: (eq PList PNil PNil)).(refl_equal C c))) in (let TMP_8 
-\def (\lambda (c3: C).(\lambda (c4: C).(\lambda (h: nat).(\lambda (d: 
+ \lambda (c1: C).(\lambda (c2: C).(\lambda (H: (drop1 PNil c1 c2)).(insert_eq 
+PList PNil (\lambda (p: PList).(drop1 p c1 c2)) (\lambda (_: PList).(eq C c1 
+c2)) (\lambda (y: PList).(\lambda (H0: (drop1 y c1 c2)).(drop1_ind (\lambda 
+(p: PList).(\lambda (c: C).(\lambda (c0: C).((eq PList p PNil) \to (eq C c 
+c0))))) (\lambda (c: C).(\lambda (_: (eq PList PNil PNil)).(refl_equal C c))) 
+(\lambda (c3: C).(\lambda (c4: C).(\lambda (h: nat).(\lambda (d: 
 nat).(\lambda (_: (drop h d c3 c4)).(\lambda (c5: C).(\lambda (hds: 
 PList).(\lambda (_: (drop1 hds c4 c5)).(\lambda (_: (((eq PList hds PNil) \to 
-(eq C c4 c5)))).(\lambda (H4: (eq PList (PCons h d hds) PNil)).(let TMP_5 
-\def (PCons h d hds) in (let TMP_6 \def (\lambda (ee: PList).(match ee with 
-[PNil \Rightarrow False | (PCons _ _ _) \Rightarrow True])) in (let H5 \def 
-(eq_ind PList TMP_5 TMP_6 I PNil H4) in (let TMP_7 \def (eq C c3 c5) in 
-(False_ind TMP_7 H5))))))))))))))) in (drop1_ind TMP_3 TMP_4 TMP_8 y c1 c2 
-H0)))))) in (insert_eq PList PNil TMP_1 TMP_2 TMP_9 H)))))).
+(eq C c4 c5)))).(\lambda (H4: (eq PList (PCons h d hds) PNil)).(let H5 \def 
+(eq_ind PList (PCons h d hds) (\lambda (ee: PList).(match ee with [PNil 
+\Rightarrow False | (PCons _ _ _) \Rightarrow True])) I PNil H4) in 
+(False_ind (eq C c3 c5) H5)))))))))))) y c1 c2 H0))) H))).
 
-theorem drop1_gen_pcons:
+lemma drop1_gen_pcons:
  \forall (c1: C).(\forall (c3: C).(\forall (hds: PList).(\forall (h: 
 nat).(\forall (d: nat).((drop1 (PCons h d hds) c1 c3) \to (ex2 C (\lambda 
 (c2: C).(drop h d c1 c2)) (\lambda (c2: C).(drop1 hds c2 c3))))))))
 \def
  \lambda (c1: C).(\lambda (c3: C).(\lambda (hds: PList).(\lambda (h: 
-nat).(\lambda (d: nat).(\lambda (H: (drop1 (PCons h d hds) c1 c3)).(let TMP_1 
-\def (PCons h d hds) in (let TMP_2 \def (\lambda (p: PList).(drop1 p c1 c3)) 
-in (let TMP_5 \def (\lambda (_: PList).(let TMP_3 \def (\lambda (c2: C).(drop 
-h d c1 c2)) in (let TMP_4 \def (\lambda (c2: C).(drop1 hds c2 c3)) in (ex2 C 
-TMP_3 TMP_4)))) in (let TMP_35 \def (\lambda (y: PList).(\lambda (H0: (drop1 
-y c1 c3)).(let TMP_8 \def (\lambda (p: PList).(\lambda (c: C).(\lambda (c0: 
-C).((eq PList p (PCons h d hds)) \to (let TMP_6 \def (\lambda (c2: C).(drop h 
-d c c2)) in (let TMP_7 \def (\lambda (c2: C).(drop1 hds c2 c0)) in (ex2 C 
-TMP_6 TMP_7))))))) in (let TMP_14 \def (\lambda (c: C).(\lambda (H1: (eq 
-PList PNil (PCons h d hds))).(let TMP_9 \def (\lambda (ee: PList).(match ee 
-with [PNil \Rightarrow True | (PCons _ _ _) \Rightarrow False])) in (let 
-TMP_10 \def (PCons h d hds) in (let H2 \def (eq_ind PList PNil TMP_9 I TMP_10 
-H1) in (let TMP_11 \def (\lambda (c2: C).(drop h d c c2)) in (let TMP_12 \def 
-(\lambda (c2: C).(drop1 hds c2 c)) in (let TMP_13 \def (ex2 C TMP_11 TMP_12) 
-in (False_ind TMP_13 H2))))))))) in (let TMP_34 \def (\lambda (c2: 
-C).(\lambda (c4: C).(\lambda (h0: nat).(\lambda (d0: nat).(\lambda (H1: (drop 
-h0 d0 c2 c4)).(\lambda (c5: C).(\lambda (hds0: PList).(\lambda (H2: (drop1 
-hds0 c4 c5)).(\lambda (H3: (((eq PList hds0 (PCons h d hds)) \to (ex2 C 
-(\lambda (c6: C).(drop h d c4 c6)) (\lambda (c6: C).(drop1 hds c6 
-c5)))))).(\lambda (H4: (eq PList (PCons h0 d0 hds0) (PCons h d hds))).(let 
-TMP_15 \def (\lambda (e: PList).(match e with [PNil \Rightarrow h0 | (PCons n 
-_ _) \Rightarrow n])) in (let TMP_16 \def (PCons h0 d0 hds0) in (let TMP_17 
-\def (PCons h d hds) in (let H5 \def (f_equal PList nat TMP_15 TMP_16 TMP_17 
-H4) in (let TMP_18 \def (\lambda (e: PList).(match e with [PNil \Rightarrow 
-d0 | (PCons _ n _) \Rightarrow n])) in (let TMP_19 \def (PCons h0 d0 hds0) in 
-(let TMP_20 \def (PCons h d hds) in (let H6 \def (f_equal PList nat TMP_18 
-TMP_19 TMP_20 H4) in (let TMP_21 \def (\lambda (e: PList).(match e with [PNil 
-\Rightarrow hds0 | (PCons _ _ p) \Rightarrow p])) in (let TMP_22 \def (PCons 
-h0 d0 hds0) in (let TMP_23 \def (PCons h d hds) in (let H7 \def (f_equal 
-PList PList TMP_21 TMP_22 TMP_23 H4) in (let TMP_32 \def (\lambda (H8: (eq 
-nat d0 d)).(\lambda (H9: (eq nat h0 h)).(let TMP_26 \def (\lambda (p: 
-PList).((eq PList p (PCons h d hds)) \to (let TMP_24 \def (\lambda (c6: 
-C).(drop h d c4 c6)) in (let TMP_25 \def (\lambda (c6: C).(drop1 hds c6 c5)) 
-in (ex2 C TMP_24 TMP_25))))) in (let H10 \def (eq_ind PList hds0 TMP_26 H3 
-hds H7) in (let TMP_27 \def (\lambda (p: PList).(drop1 p c4 c5)) in (let H11 
-\def (eq_ind PList hds0 TMP_27 H2 hds H7) in (let TMP_28 \def (\lambda (n: 
-nat).(drop h0 n c2 c4)) in (let H12 \def (eq_ind nat d0 TMP_28 H1 d H8) in 
-(let TMP_29 \def (\lambda (n: nat).(drop n d c2 c4)) in (let H13 \def (eq_ind 
-nat h0 TMP_29 H12 h H9) in (let TMP_30 \def (\lambda (c6: C).(drop h d c2 
-c6)) in (let TMP_31 \def (\lambda (c6: C).(drop1 hds c6 c5)) in (ex_intro2 C 
-TMP_30 TMP_31 c4 H13 H11))))))))))))) in (let TMP_33 \def (TMP_32 H6) in 
-(TMP_33 H5))))))))))))))))))))))))) in (drop1_ind TMP_8 TMP_14 TMP_34 y c1 c3 
-H0)))))) in (insert_eq PList TMP_1 TMP_2 TMP_5 TMP_35 H)))))))))).
+nat).(\lambda (d: nat).(\lambda (H: (drop1 (PCons h d hds) c1 c3)).(insert_eq 
+PList (PCons h d hds) (\lambda (p: PList).(drop1 p c1 c3)) (\lambda (_: 
+PList).(ex2 C (\lambda (c2: C).(drop h d c1 c2)) (\lambda (c2: C).(drop1 hds 
+c2 c3)))) (\lambda (y: PList).(\lambda (H0: (drop1 y c1 c3)).(drop1_ind 
+(\lambda (p: PList).(\lambda (c: C).(\lambda (c0: C).((eq PList p (PCons h d 
+hds)) \to (ex2 C (\lambda (c2: C).(drop h d c c2)) (\lambda (c2: C).(drop1 
+hds c2 c0))))))) (\lambda (c: C).(\lambda (H1: (eq PList PNil (PCons h d 
+hds))).(let H2 \def (eq_ind PList PNil (\lambda (ee: PList).(match ee with 
+[PNil \Rightarrow True | (PCons _ _ _) \Rightarrow False])) I (PCons h d hds) 
+H1) in (False_ind (ex2 C (\lambda (c2: C).(drop h d c c2)) (\lambda (c2: 
+C).(drop1 hds c2 c))) H2)))) (\lambda (c2: C).(\lambda (c4: C).(\lambda (h0: 
+nat).(\lambda (d0: nat).(\lambda (H1: (drop h0 d0 c2 c4)).(\lambda (c5: 
+C).(\lambda (hds0: PList).(\lambda (H2: (drop1 hds0 c4 c5)).(\lambda (H3: 
+(((eq PList hds0 (PCons h d hds)) \to (ex2 C (\lambda (c6: C).(drop h d c4 
+c6)) (\lambda (c6: C).(drop1 hds c6 c5)))))).(\lambda (H4: (eq PList (PCons 
+h0 d0 hds0) (PCons h d hds))).(let H5 \def (f_equal PList nat (\lambda (e: 
+PList).(match e with [PNil \Rightarrow h0 | (PCons n _ _) \Rightarrow n])) 
+(PCons h0 d0 hds0) (PCons h d hds) H4) in ((let H6 \def (f_equal PList nat 
+(\lambda (e: PList).(match e with [PNil \Rightarrow d0 | (PCons _ n _) 
+\Rightarrow n])) (PCons h0 d0 hds0) (PCons h d hds) H4) in ((let H7 \def 
+(f_equal PList PList (\lambda (e: PList).(match e with [PNil \Rightarrow hds0 
+| (PCons _ _ p) \Rightarrow p])) (PCons h0 d0 hds0) (PCons h d hds) H4) in 
+(\lambda (H8: (eq nat d0 d)).(\lambda (H9: (eq nat h0 h)).(let H10 \def 
+(eq_ind PList hds0 (\lambda (p: PList).((eq PList p (PCons h d hds)) \to (ex2 
+C (\lambda (c6: C).(drop h d c4 c6)) (\lambda (c6: C).(drop1 hds c6 c5))))) 
+H3 hds H7) in (let H11 \def (eq_ind PList hds0 (\lambda (p: PList).(drop1 p 
+c4 c5)) H2 hds H7) in (let H12 \def (eq_ind nat d0 (\lambda (n: nat).(drop h0 
+n c2 c4)) H1 d H8) in (let H13 \def (eq_ind nat h0 (\lambda (n: nat).(drop n 
+d c2 c4)) H12 h H9) in (ex_intro2 C (\lambda (c6: C).(drop h d c2 c6)) 
+(\lambda (c6: C).(drop1 hds c6 c5)) c4 H13 H11)))))))) H6)) H5)))))))))))) y 
+c1 c3 H0))) H)))))).