Theorem zfrep6 7134

Description: A version of the Axiom of Replacement. Normally ph would have free variables x and y. Axiom 6 of [Kunen] p. 12. The Separation Scheme ax-sep 4781 cannot be derived from this version and must be stated as a separate axiom in an axiom system (such as Kunen's) that uses this version in place of our ax-rep 4771. (Contributed by NM, 10-Oct-2003.)

Assertion

Ref	Expression
zfrep6	|- ( A. x e. z E! y ph -> E. w A. x e. z E. y e. w ph )

Distinct variable groups:   ph, w   x, y, z, w

Allowed substitution hints:   ph( x, y, z)

Proof of Theorem zfrep6

Step	Hyp	Ref	Expression
1		euex 2494	. . . . . . 7 |- ( E! y ph -> E. y ph )
2	1	ralimi 2952	. . . . . 6 |- ( A. x e. z E! y ph -> A. x e. z E. y ph )
3		rabid2 3118	. . . . . 6 |- ( z = { x e. z | E. y ph } <-> A. x e. z E. y ph )
4	2, 3	sylibr 224	. . . . 5 |- ( A. x e. z E! y ph -> z = { x e. z | E. y ph } )
5		19.42v 1918	. . . . . . 7 |- ( E. y ( x e. z /\ ph ) <-> ( x e. z /\ E. y ph ) )
6	5	abbii 2739	. . . . . 6 |- { x | E. y ( x e. z /\ ph ) } = { x | ( x e. z /\ E. y ph ) }
7		dmopab 5335	. . . . . 6 |- dom { <. x , y >. | ( x e. z /\ ph ) } = { x | E. y ( x e. z /\ ph ) }
8		df-rab 2921	. . . . . 6 |- { x e. z | E. y ph } = { x | ( x e. z /\ E. y ph ) }
9	6, 7, 8	3eqtr4i 2654	. . . . 5 |- dom { <. x , y >. | ( x e. z /\ ph ) } = { x e. z | E. y ph }
10	4, 9	syl6reqr 2675	. . . 4 |- ( A. x e. z E! y ph -> dom { <. x , y >. | ( x e. z /\ ph ) } = z )
11		vex 3203	. . . 4 |- z e. _V
12	10, 11	syl6eqel 2709	. . 3 |- ( A. x e. z E! y ph -> dom { <. x , y >. | ( x e. z /\ ph ) } e. _V )
13		eumo 2499	. . . . . . 7 |- ( E! y ph -> E* y ph )
14	13	imim2i 16	. . . . . 6 |- ( ( x e. z -> E! y ph ) -> ( x e. z -> E* y ph ) )
15		moanimv 2531	. . . . . 6 |- ( E* y ( x e. z /\ ph ) <-> ( x e. z -> E* y ph ) )
16	14, 15	sylibr 224	. . . . 5 |- ( ( x e. z -> E! y ph ) -> E* y ( x e. z /\ ph ) )
17	16	alimi 1739	. . . 4 |- ( A. x ( x e. z -> E! y ph ) -> A. x E* y ( x e. z /\ ph ) )
18		df-ral 2917	. . . 4 |- ( A. x e. z E! y ph <-> A. x ( x e. z -> E! y ph ) )
19		funopab 5923	. . . 4 |- ( Fun { <. x , y >. | ( x e. z /\ ph ) } <-> A. x E* y ( x e. z /\ ph ) )
20	17, 18, 19	3imtr4i 281	. . 3 |- ( A. x e. z E! y ph -> Fun { <. x , y >. | ( x e. z /\ ph ) } )
21		funrnex 7133	. . 3 |- ( dom { <. x , y >. | ( x e. z /\ ph ) } e. _V -> ( Fun { <. x , y >. | ( x e. z /\ ph ) } -> ran { <. x , y >. | ( x e. z /\ ph ) } e. _V ) )
22	12, 20, 21	sylc 65	. 2 |- ( A. x e. z E! y ph -> ran { <. x , y >. | ( x e. z /\ ph ) } e. _V )
23		nfra1 2941	. . 3 |- F/ x A. x e. z E! y ph
24	10	eleq2d 2687	. . . 4 |- ( A. x e. z E! y ph -> ( x e. dom { <. x , y >. | ( x e. z /\ ph ) } <-> x e. z ) )
25		opabid 4982	. . . . . . . . 9 |- ( <. x , y >. e. { <. x , y >. | ( x e. z /\ ph ) } <-> ( x e. z /\ ph ) )
26		vex 3203	. . . . . . . . . 10 |- x e. _V
27		vex 3203	. . . . . . . . . 10 |- y e. _V
28	26, 27	opelrn 5357	. . . . . . . . 9 |- ( <. x , y >. e. { <. x , y >. | ( x e. z /\ ph ) } -> y e. ran { <. x , y >. | ( x e. z /\ ph ) } )
29	25, 28	sylbir 225	. . . . . . . 8 |- ( ( x e. z /\ ph ) -> y e. ran { <. x , y >. | ( x e. z /\ ph ) } )
30	29	ex 450	. . . . . . 7 |- ( x e. z -> ( ph -> y e. ran { <. x , y >. | ( x e. z /\ ph ) } ) )
31	30	impac 651	. . . . . 6 |- ( ( x e. z /\ ph ) -> ( y e. ran { <. x , y >. | ( x e. z /\ ph ) } /\ ph ) )
32	31	eximi 1762	. . . . 5 |- ( E. y ( x e. z /\ ph ) -> E. y ( y e. ran { <. x , y >. | ( x e. z /\ ph ) } /\ ph ) )
33	7	abeq2i 2735	. . . . 5 |- ( x e. dom { <. x , y >. | ( x e. z /\ ph ) } <-> E. y ( x e. z /\ ph ) )
34		df-rex 2918	. . . . 5 |- ( E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph <-> E. y ( y e. ran { <. x , y >. | ( x e. z /\ ph ) } /\ ph ) )
35	32, 33, 34	3imtr4i 281	. . . 4 |- ( x e. dom { <. x , y >. | ( x e. z /\ ph ) } -> E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph )
36	24, 35	syl6bir 244	. . 3 |- ( A. x e. z E! y ph -> ( x e. z -> E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph ) )
37	23, 36	ralrimi 2957	. 2 |- ( A. x e. z E! y ph -> A. x e. z E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph )
38		nfopab1 4719	. . . . . 6 |- F/_ x { <. x , y >. | ( x e. z /\ ph ) }
39	38	nfrn 5368	. . . . 5 |- F/_ x ran { <. x , y >. | ( x e. z /\ ph ) }
40	39	nfeq2 2780	. . . 4 |- F/ x w = ran { <. x , y >. | ( x e. z /\ ph ) }
41		nfcv 2764	. . . . 5 |- F/_ y w
42		nfopab2 4720	. . . . . 6 |- F/_ y { <. x , y >. | ( x e. z /\ ph ) }
43	42	nfrn 5368	. . . . 5 |- F/_ y ran { <. x , y >. | ( x e. z /\ ph ) }
44	41, 43	rexeqf 3135	. . . 4 |- ( w = ran { <. x , y >. | ( x e. z /\ ph ) } -> ( E. y e. w ph <-> E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph ) )
45	40, 44	ralbid 2983	. . 3 |- ( w = ran { <. x , y >. | ( x e. z /\ ph ) } -> ( A. x e. z E. y e. w ph <-> A. x e. z E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph ) )
46	45	spcegv 3294	. 2 |- ( ran { <. x , y >. | ( x e. z /\ ph ) } e. _V -> ( A. x e. z E. y e. ran { <. x , y >. | ( x e. z /\ ph ) } ph -> E. w A. x e. z E. y e. w ph ) )
47	22, 37, 46	sylc 65	1 |- ( A. x e. z E! y ph -> E. w A. x e. z E. y e. w ph )

Syntax hints:   -> wi 4   /\ wa 384   A.wal 1481   = wceq 1483   E.wex 1704   e. wcel 1990   E!weu 2470   E*wmo 2471   {cab 2608   A.wral 2912   E.wrex 2913   {crab 2916   _Vcvv 3200   <.cop 4183   {copab 4712   dom cdm 5114   ran crn 5115   Fun wfun 5882

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-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  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-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-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-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

This theorem is referenced by:  bnj865  30993