Theorem tfrlemiex 6497

Description: Lemma for tfrlemi1 6498. (Contributed by Jim Kingdon, 18-Mar-2019.) (Proof shortened by Mario Carneiro, 24-May-2019.)

Hypotheses

Ref	Expression
tfrlemisucfn.1	|- A = { f | E. x e. On ( f Fn x /\ A. y e. x ( f ` y ) = ( F ` ( f |` y ) ) ) }
tfrlemisucfn.2	|- ( ph -> A. x ( Fun F /\ ( F ` x ) e. _V ) )
tfrlemi1.3	|- B = { h | E. z e. x E. g ( g Fn z /\ g e. A /\ h = ( g u. { <. z , ( F ` g ) >. } ) ) }
tfrlemi1.4	|- ( ph -> x e. On )
tfrlemi1.5	|- ( ph -> A. z e. x E. g ( g Fn z /\ A. w e. z ( g ` w ) = ( F ` ( g |` w ) ) ) )

Assertion

Ref	Expression
tfrlemiex	|- ( ph -> E. f ( f Fn x /\ A. u e. x ( f ` u ) = ( F ` ( f |` u ) ) ) )

Distinct variable groups:   f, g, h, u, w, x, y, z, A   f, F, g, h, u, w, x, y, z   ph, w, y   u, B, w, f, g, h, z   ph, g, h, z

Allowed substitution hints:   ph( x, u, f)   B( x, y)

Proof of Theorem tfrlemiex

Step	Hyp	Ref	Expression
1		tfrlemisucfn.1	. . . 4 |- A = { f | E. x e. On ( f Fn x /\ A. y e. x ( f ` y ) = ( F ` ( f |` y ) ) ) }
2		tfrlemisucfn.2	. . . 4 |- ( ph -> A. x ( Fun F /\ ( F ` x ) e. _V ) )
3		tfrlemi1.3	. . . 4 |- B = { h | E. z e. x E. g ( g Fn z /\ g e. A /\ h = ( g u. { <. z , ( F ` g ) >. } ) ) }
4		tfrlemi1.4	. . . 4 |- ( ph -> x e. On )
5		tfrlemi1.5	. . . 4 |- ( ph -> A. z e. x E. g ( g Fn z /\ A. w e. z ( g ` w ) = ( F ` ( g |` w ) ) ) )
6	1, 2, 3, 4, 5	tfrlemibex 6495	. . 3 |- ( ph -> B e. _V )
7		uniexg 4536	. . 3 |- ( B e. _V -> U. B e. _V )
8	6, 7	syl 14	. 2 |- ( ph -> U. B e. _V )
9	1, 2, 3, 4, 5	tfrlemibfn 6494	. . 3 |- ( ph -> U. B Fn x )
10	1, 2, 3, 4, 5	tfrlemiubacc 6496	. . 3 |- ( ph -> A. u e. x ( U. B ` u ) = ( F ` ( U. B |` u ) ) )
11	9, 10	jca 306	. 2 |- ( ph -> ( U. B Fn x /\ A. u e. x ( U. B ` u ) = ( F ` ( U. B |` u ) ) ) )
12		fneq1 5418	. . . 4 |- ( f = U. B -> ( f Fn x <-> U. B Fn x ) )
13		fveq1 5638	. . . . . 6 |- ( f = U. B -> ( f ` u ) = ( U. B ` u ) )
14		reseq1 5007	. . . . . . 7 |- ( f = U. B -> ( f |` u ) = ( U. B |` u ) )
15	14	fveq2d 5643	. . . . . 6 |- ( f = U. B -> ( F ` ( f |` u ) ) = ( F ` ( U. B |` u ) ) )
16	13, 15	eqeq12d 2246	. . . . 5 |- ( f = U. B -> ( ( f ` u ) = ( F ` ( f |` u ) ) <-> ( U. B ` u ) = ( F ` ( U. B |` u ) ) ) )
17	16	ralbidv 2532	. . . 4 |- ( f = U. B -> ( A. u e. x ( f ` u ) = ( F ` ( f |` u ) ) <-> A. u e. x ( U. B ` u ) = ( F ` ( U. B |` u ) ) ) )
18	12, 17	anbi12d 473	. . 3 |- ( f = U. B -> ( ( f Fn x /\ A. u e. x ( f ` u ) = ( F ` ( f |` u ) ) ) <-> ( U. B Fn x /\ A. u e. x ( U. B ` u ) = ( F ` ( U. B |` u ) ) ) ) )
19	18	spcegv 2894	. 2 |- ( U. B e. _V -> ( ( U. B Fn x /\ A. u e. x ( U. B ` u ) = ( F ` ( U. B |` u ) ) ) -> E. f ( f Fn x /\ A. u e. x ( f ` u ) = ( F ` ( f |` u ) ) ) ) )
20	8, 11, 19	sylc 62	1 |- ( ph -> E. f ( f Fn x /\ A. u e. x ( f ` u ) = ( F ` ( f |` u ) ) ) )

Syntax hints:   -> wi 4   /\ wa 104   /\ w3a 1004   A.wal 1395   = wceq 1397   E.wex 1540   e. wcel 2202   {cab 2217   A.wral 2510   E.wrex 2511   _Vcvv 2802   u. cun 3198   {csn 3669   <.cop 3672   U.cuni 3893   Oncon0 4460   |` cres 4727   Fun wfun 5320   Fn wfn 5321   ` cfv 5326

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 619  ax-in2 620  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-tr 4188  df-id 4390  df-iord 4463  df-on 4465  df-suc 4468  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-recs 6471

This theorem is referenced by:  tfrlemi1  6498