Theorem relmptopab 6256

Description: Any function to sets of ordered pairs produces a relation on function value unconditionally. (Contributed by Mario Carneiro, 7-Aug-2014.) (Proof shortened by Mario Carneiro, 24-Dec-2016.)

Hypothesis

Ref	Expression
relmptopab.1	|- F = ( x e. A |-> { <. y , z >. | ph } )

Assertion

Ref	Expression
relmptopab	|- Rel ( F ` B )

Distinct variable group:   x, A

Allowed substitution hints:   ph( x, y, z)   A( y, z)   B( x, y, z)   F( x, y, z)

Proof of Theorem relmptopab

Dummy variable r is distinct from all other variables.

Step	Hyp	Ref	Expression
1		relmptopab.1	. . . . . . . 8 |- F = ( x e. A |-> { <. y , z >. | ph } )
2	1	funmpt2 5391	. . . . . . 7 |- Fun F
3		funrel 5369	. . . . . . 7 |- ( Fun F -> Rel F )
4	2, 3	ax-mp 5	. . . . . 6 |- Rel F
5		relelfvdm 5702	. . . . . 6 |- ( ( Rel F /\ r e. ( F ` B ) ) -> B e. dom F )
6	4, 5	mpan 424	. . . . 5 |- ( r e. ( F ` B ) -> B e. dom F )
7		relopab 4881	. . . . . . 7 |- Rel { <. y , z >. | ph }
8		df-rel 4756	. . . . . . 7 |- ( Rel { <. y , z >. | ph } <-> { <. y , z >. | ph } C_ ( _V X. _V ) )
9	7, 8	mpbi 145	. . . . . 6 |- { <. y , z >. | ph } C_ ( _V X. _V )
10	9	rgenw 2597	. . . . 5 |- A. x e. A { <. y , z >. | ph } C_ ( _V X. _V )
11	1	fvmptssdm 5762	. . . . 5 |- ( ( B e. dom F /\ A. x e. A { <. y , z >. | ph } C_ ( _V X. _V ) ) -> ( F ` B ) C_ ( _V X. _V ) )
12	6, 10, 11	sylancl 413	. . . 4 |- ( r e. ( F ` B ) -> ( F ` B ) C_ ( _V X. _V ) )
13		ssel 3232	. . . 4 |- ( ( F ` B ) C_ ( _V X. _V ) -> ( r e. ( F ` B ) -> r e. ( _V X. _V ) ) )
14	12, 13	mpcom 36	. . 3 |- ( r e. ( F ` B ) -> r e. ( _V X. _V ) )
15	14	ssriv 3242	. 2 |- ( F ` B ) C_ ( _V X. _V )
16		df-rel 4756	. 2 |- ( Rel ( F ` B ) <-> ( F ` B ) C_ ( _V X. _V ) )
17	15, 16	mpbir 146	1 |- Rel ( F ` B )

Syntax hints:   = wceq 1398   e. wcel 2203   A.wral 2520   _Vcvv 2813   C_ wss 3211   {copab 4170   |-> cmpt 4171   X. cxp 4747   dom cdm 4749   Rel wrel 4754   Fun wfun 5346   ` cfv 5352

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-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-pow 4287  ax-pr 4322

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-un 3215  df-in 3217  df-ss 3224  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-opab 4172  df-mpt 4173  df-id 4414  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fv 5360

This theorem is referenced by:  reldvdsr  14236  lmrel  15056  relwlk  16342  reltrls  16377  releupth  16439