Theorem 2shfti 13820

Description: Composite shift operations. (Contributed by NM, 19-Aug-2005.) (Revised by Mario Carneiro, 5-Nov-2013.)

Hypothesis

Ref	Expression
shftfval.1	|- F e. _V

Assertion

Ref	Expression
2shfti	|- ( ( A e. CC /\ B e. CC ) -> ( ( F shift A ) shift B ) = ( F shift ( A + B ) ) )

Proof of Theorem 2shfti

Dummy variables x w y z are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		shftfval.1	. . . . . . . . 9 |- F e. _V
2	1	shftfval 13810	. . . . . . . 8 |- ( A e. CC -> ( F shift A ) = { <. z , w >. | ( z e. CC /\ ( z - A ) F w ) } )
3	2	breqd 4664	. . . . . . 7 |- ( A e. CC -> ( ( x - B ) ( F shift A ) y <-> ( x - B ) { <. z , w >. | ( z e. CC /\ ( z - A ) F w ) } y ) )
4		ovex 6678	. . . . . . . 8 |- ( x - B ) e. _V
5		vex 3203	. . . . . . . 8 |- y e. _V
6		eleq1 2689	. . . . . . . . 9 |- ( z = ( x - B ) -> ( z e. CC <-> ( x - B ) e. CC ) )
7		oveq1 6657	. . . . . . . . . 10 |- ( z = ( x - B ) -> ( z - A ) = ( ( x - B ) - A ) )
8	7	breq1d 4663	. . . . . . . . 9 |- ( z = ( x - B ) -> ( ( z - A ) F w <-> ( ( x - B ) - A ) F w ) )
9	6, 8	anbi12d 747	. . . . . . . 8 |- ( z = ( x - B ) -> ( ( z e. CC /\ ( z - A ) F w ) <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F w ) ) )
10		breq2 4657	. . . . . . . . 9 |- ( w = y -> ( ( ( x - B ) - A ) F w <-> ( ( x - B ) - A ) F y ) )
11	10	anbi2d 740	. . . . . . . 8 |- ( w = y -> ( ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F w ) <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) ) )
12		eqid 2622	. . . . . . . 8 |- { <. z , w >. | ( z e. CC /\ ( z - A ) F w ) } = { <. z , w >. | ( z e. CC /\ ( z - A ) F w ) }
13	4, 5, 9, 11, 12	brab 4998	. . . . . . 7 |- ( ( x - B ) { <. z , w >. | ( z e. CC /\ ( z - A ) F w ) } y <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) )
14	3, 13	syl6bb 276	. . . . . 6 |- ( A e. CC -> ( ( x - B ) ( F shift A ) y <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) ) )
15	14	ad2antrr 762	. . . . 5 |- ( ( ( A e. CC /\ B e. CC ) /\ x e. CC ) -> ( ( x - B ) ( F shift A ) y <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) ) )
16		subcl 10280	. . . . . . . 8 |- ( ( x e. CC /\ B e. CC ) -> ( x - B ) e. CC )
17	16	biantrurd 529	. . . . . . 7 |- ( ( x e. CC /\ B e. CC ) -> ( ( ( x - B ) - A ) F y <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) ) )
18	17	ancoms 469	. . . . . 6 |- ( ( B e. CC /\ x e. CC ) -> ( ( ( x - B ) - A ) F y <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) ) )
19	18	adantll 750	. . . . 5 |- ( ( ( A e. CC /\ B e. CC ) /\ x e. CC ) -> ( ( ( x - B ) - A ) F y <-> ( ( x - B ) e. CC /\ ( ( x - B ) - A ) F y ) ) )
20		sub32 10315	. . . . . . . . 9 |- ( ( x e. CC /\ A e. CC /\ B e. CC ) -> ( ( x - A ) - B ) = ( ( x - B ) - A ) )
21		subsub4 10314	. . . . . . . . 9 |- ( ( x e. CC /\ A e. CC /\ B e. CC ) -> ( ( x - A ) - B ) = ( x - ( A + B ) ) )
22	20, 21	eqtr3d 2658	. . . . . . . 8 |- ( ( x e. CC /\ A e. CC /\ B e. CC ) -> ( ( x - B ) - A ) = ( x - ( A + B ) ) )
23	22	3expb 1266	. . . . . . 7 |- ( ( x e. CC /\ ( A e. CC /\ B e. CC ) ) -> ( ( x - B ) - A ) = ( x - ( A + B ) ) )
24	23	ancoms 469	. . . . . 6 |- ( ( ( A e. CC /\ B e. CC ) /\ x e. CC ) -> ( ( x - B ) - A ) = ( x - ( A + B ) ) )
25	24	breq1d 4663	. . . . 5 |- ( ( ( A e. CC /\ B e. CC ) /\ x e. CC ) -> ( ( ( x - B ) - A ) F y <-> ( x - ( A + B ) ) F y ) )
26	15, 19, 25	3bitr2d 296	. . . 4 |- ( ( ( A e. CC /\ B e. CC ) /\ x e. CC ) -> ( ( x - B ) ( F shift A ) y <-> ( x - ( A + B ) ) F y ) )
27	26	pm5.32da 673	. . 3 |- ( ( A e. CC /\ B e. CC ) -> ( ( x e. CC /\ ( x - B ) ( F shift A ) y ) <-> ( x e. CC /\ ( x - ( A + B ) ) F y ) ) )
28	27	opabbidv 4716	. 2 |- ( ( A e. CC /\ B e. CC ) -> { <. x , y >. | ( x e. CC /\ ( x - B ) ( F shift A ) y ) } = { <. x , y >. | ( x e. CC /\ ( x - ( A + B ) ) F y ) } )
29		ovex 6678	. . . 4 |- ( F shift A ) e. _V
30	29	shftfval 13810	. . 3 |- ( B e. CC -> ( ( F shift A ) shift B ) = { <. x , y >. | ( x e. CC /\ ( x - B ) ( F shift A ) y ) } )
31	30	adantl 482	. 2 |- ( ( A e. CC /\ B e. CC ) -> ( ( F shift A ) shift B ) = { <. x , y >. | ( x e. CC /\ ( x - B ) ( F shift A ) y ) } )
32		addcl 10018	. . 3 |- ( ( A e. CC /\ B e. CC ) -> ( A + B ) e. CC )
33	1	shftfval 13810	. . 3 |- ( ( A + B ) e. CC -> ( F shift ( A + B ) ) = { <. x , y >. | ( x e. CC /\ ( x - ( A + B ) ) F y ) } )
34	32, 33	syl 17	. 2 |- ( ( A e. CC /\ B e. CC ) -> ( F shift ( A + B ) ) = { <. x , y >. | ( x e. CC /\ ( x - ( A + B ) ) F y ) } )
35	28, 31, 34	3eqtr4d 2666	1 |- ( ( A e. CC /\ B e. CC ) -> ( ( F shift A ) shift B ) = ( F shift ( A + B ) ) )

Syntax hints:   -> wi 4   <-> wb 196   /\ wa 384   /\ w3a 1037   = wceq 1483   e. wcel 1990   _Vcvv 3200   class class class wbr 4653   {copab 4712  (class class class)co 6650   CCcc 9934   + caddc 9939   - cmin 10266   shift cshi 13806

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-po 5035  df-so 5036  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-er 7742  df-en 7956  df-dom 7957  df-sdom 7958  df-pnf 10076  df-mnf 10077  df-ltxr 10079  df-sub 10268  df-shft 13807

This theorem is referenced by:  shftcan1  13823