Theorem shftf 11595

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 5533	. . 3 |- ( F : B --> C -> F Fn B )
2		shftfval.1	. . . 4 |- F e. _V
3	2	shftfn 11589	. . 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 6092	. . . . . 6 |- ( x = y -> ( x - A ) = ( y - A ) )
6	5	eleq1d 2307	. . . . 5 |- ( x = y -> ( ( x - A ) e. B <-> ( y - A ) e. B ) )
7	6	elrab 2982	. . . 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 11590	. . . . . 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 5841	. . . . . 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 2315	. . . 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 2623	. 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 5866	. 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 421	1 |- ( ( F : B --> C /\ A e. CC ) -> ( F shift A ) : { x e. CC | ( x - A ) e. B } --> C )

This proof depends on syntax axioms:   -> wi 4   /\ wa 104   = wceq 1402   e. wcel 2209   A.wral 2528   {crab 2532   _Vcvv 2821   Fn wfn 5372   -->wf 5373   ` cfv 5377  (class class class)co 6085   CCcc 8177   - cmin 8497   shift cshi 11579

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4246  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-setind 4684  ax-resscn 8271  ax-1cn 8272  ax-icn 8274  ax-addcl 8275  ax-addrcl 8276  ax-mulcl 8277  ax-addcom 8279  ax-addass 8281  ax-distr 8283  ax-i2m1 8284  ax-0id 8287  ax-rnegex 8288  ax-cnre 8290

This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ne 2421  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-iun 4014  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-ima 4787  df-iota 5337  df-fun 5379  df-fn 5380  df-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-riota 6038  df-ov 6088  df-oprab 6089  df-mpo 6090  df-sub 8499  df-shft 11580

This theorem is used by: (None)