Theorem shftf 11341

Description: Functionality of a shifted sequence. (Contributed by NM, 19-Aug-2005.) (Revised by Mario Carneiro, 5-Nov-2013.)

Hypothesis

Ref	Expression
shftfval.1	|- F e. _V

Assertion

Ref	Expression
shftf	|- ( ( F : B --> C /\ A e. CC ) -> ( F shift A ) : { x e. CC | ( x - A ) e. B } --> C )

Distinct variable groups:   x, A   x, F   x, B

Allowed substitution hint:   C( x)

Proof of Theorem shftf

Dummy variable y is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ffn 5473	. . 3 |- ( F : B --> C -> F Fn B )
2		shftfval.1	. . . 4 |- F e. _V
3	2	shftfn 11335	. . 3 |- ( ( F Fn B /\ A e. CC ) -> ( F shift A ) Fn { x e. CC | ( x - A ) e. B } )
4	1, 3	sylan 283	. 2 |- ( ( F : B --> C /\ A e. CC ) -> ( F shift A ) Fn { x e. CC | ( x - A ) e. B } )
5		oveq1 6008	. . . . . 6 |- ( x = y -> ( x - A ) = ( y - A ) )
6	5	eleq1d 2298	. . . . 5 |- ( x = y -> ( ( x - A ) e. B <-> ( y - A ) e. B ) )
7	6	elrab 2959	. . . 4 |- ( y e. { x e. CC | ( x - A ) e. B } <-> ( y e. CC /\ ( y - A ) e. B ) )
8		simpr 110	. . . . . 6 |- ( ( F : B --> C /\ A e. CC ) -> A e. CC )
9		simpl 109	. . . . . 6 |- ( ( y e. CC /\ ( y - A ) e. B ) -> y e. CC )
10	2	shftval 11336	. . . . . 6 |- ( ( A e. CC /\ y e. CC ) -> ( ( F shift A ) ` y ) = ( F ` ( y - A ) ) )
11	8, 9, 10	syl2an 289	. . . . 5 |- ( ( ( F : B --> C /\ A e. CC ) /\ ( y e. CC /\ ( y - A ) e. B ) ) -> ( ( F shift A ) ` y ) = ( F ` ( y - A ) ) )
12		simpl 109	. . . . . 6 |- ( ( F : B --> C /\ A e. CC ) -> F : B --> C )
13		simpr 110	. . . . . 6 |- ( ( y e. CC /\ ( y - A ) e. B ) -> ( y - A ) e. B )
14		ffvelcdm 5768	. . . . . 6 |- ( ( F : B --> C /\ ( y - A ) e. B ) -> ( F ` ( y - A ) ) e. C )
15	12, 13, 14	syl2an 289	. . . . 5 |- ( ( ( F : B --> C /\ A e. CC ) /\ ( y e. CC /\ ( y - A ) e. B ) ) -> ( F ` ( y - A ) ) e. C )
16	11, 15	eqeltrd 2306	. . . 4 |- ( ( ( F : B --> C /\ A e. CC ) /\ ( y e. CC /\ ( y - A ) e. B ) ) -> ( ( F shift A ) ` y ) e. C )
17	7, 16	sylan2b 287	. . 3 |- ( ( ( F : B --> C /\ A e. CC ) /\ y e. { x e. CC | ( x - A ) e. B } ) -> ( ( F shift A ) ` y ) e. C )
18	17	ralrimiva 2603	. 2 |- ( ( F : B --> C /\ A e. CC ) -> A. y e. { x e. CC | ( x - A ) e. B } ( ( F shift A ) ` y ) e. C )
19		ffnfv 5793	. 2 |- ( ( F shift A ) : { x e. CC | ( x - A ) e. B } --> C <-> ( ( F shift A ) Fn { x e. CC | ( x - A ) e. B } /\ A. y e. { x e. CC | ( x - A ) e. B } ( ( F shift A ) ` y ) e. C ) )
20	4, 18, 19	sylanbrc 417	1 |- ( ( F : B --> C /\ A e. CC ) -> ( F shift A ) : { x e. CC | ( x - A ) e. B } --> C )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1395   e. wcel 2200   A.wral 2508   {crab 2512   _Vcvv 2799   Fn wfn 5313   -->wf 5314   ` cfv 5318  (class class class)co 6001   CCcc 7997   - cmin 8317   shift cshi 11325

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4199  ax-sep 4202  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-resscn 8091  ax-1cn 8092  ax-icn 8094  ax-addcl 8095  ax-addrcl 8096  ax-mulcl 8097  ax-addcom 8099  ax-addass 8101  ax-distr 8103  ax-i2m1 8104  ax-0id 8107  ax-rnegex 8108  ax-cnre 8110

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-iun 3967  df-br 4084  df-opab 4146  df-mpt 4147  df-id 4384  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-ima 4732  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-f1 5323  df-fo 5324  df-f1o 5325  df-fv 5326  df-riota 5954  df-ov 6004  df-oprab 6005  df-mpo 6006  df-sub 8319  df-shft 11326

This theorem is referenced by: (None)