Theorem fliftel 5694

Description: Elementhood in the relation F. (Contributed by Mario Carneiro, 23-Dec-2016.)

Hypotheses

Ref	Expression
flift.1	|- F = ran ( x e. X |-> <. A , B >. )
flift.2	|- ( ( ph /\ x e. X ) -> A e. R )
flift.3	|- ( ( ph /\ x e. X ) -> B e. S )

Assertion

Ref	Expression
fliftel	|- ( ph -> ( C F D <-> E. x e. X ( C = A /\ D = B ) ) )

Distinct variable groups:   x, C   x, R   x, D   ph, x   x, X   x, S

Allowed substitution hints:   A( x)   B( x)   F( x)

Proof of Theorem fliftel

Step	Hyp	Ref	Expression
1		df-br 3930	. . . 4 |- ( C F D <-> <. C , D >. e. F )
2		flift.1	. . . . 5 |- F = ran ( x e. X |-> <. A , B >. )
3	2	eleq2i 2206	. . . 4 |- ( <. C , D >. e. F <-> <. C , D >. e. ran ( x e. X |-> <. A , B >. ) )
4	1, 3	bitri 183	. . 3 |- ( C F D <-> <. C , D >. e. ran ( x e. X |-> <. A , B >. ) )
5		flift.2	. . . . . 6 |- ( ( ph /\ x e. X ) -> A e. R )
6		flift.3	. . . . . 6 |- ( ( ph /\ x e. X ) -> B e. S )
7		opexg 4150	. . . . . 6 |- ( ( A e. R /\ B e. S ) -> <. A , B >. e. _V )
8	5, 6, 7	syl2anc 408	. . . . 5 |- ( ( ph /\ x e. X ) -> <. A , B >. e. _V )
9	8	ralrimiva 2505	. . . 4 |- ( ph -> A. x e. X <. A , B >. e. _V )
10		eqid 2139	. . . . 5 |- ( x e. X |-> <. A , B >. ) = ( x e. X |-> <. A , B >. )
11	10	elrnmptg 4791	. . . 4 |- ( A. x e. X <. A , B >. e. _V -> ( <. C , D >. e. ran ( x e. X |-> <. A , B >. ) <-> E. x e. X <. C , D >. = <. A , B >. ) )
12	9, 11	syl 14	. . 3 |- ( ph -> ( <. C , D >. e. ran ( x e. X |-> <. A , B >. ) <-> E. x e. X <. C , D >. = <. A , B >. ) )
13	4, 12	syl5bb 191	. 2 |- ( ph -> ( C F D <-> E. x e. X <. C , D >. = <. A , B >. ) )
14		opthg2 4161	. . . 4 |- ( ( A e. R /\ B e. S ) -> ( <. C , D >. = <. A , B >. <-> ( C = A /\ D = B ) ) )
15	5, 6, 14	syl2anc 408	. . 3 |- ( ( ph /\ x e. X ) -> ( <. C , D >. = <. A , B >. <-> ( C = A /\ D = B ) ) )
16	15	rexbidva 2434	. 2 |- ( ph -> ( E. x e. X <. C , D >. = <. A , B >. <-> E. x e. X ( C = A /\ D = B ) ) )
17	13, 16	bitrd 187	1 |- ( ph -> ( C F D <-> E. x e. X ( C = A /\ D = B ) ) )

Syntax hints:   -> wi 4   /\ wa 103   <-> wb 104   = wceq 1331   e. wcel 1480   A.wral 2416   E.wrex 2417   _Vcvv 2686   <.cop 3530   class class class wbr 3929   |-> cmpt 3989   ran crn 4540

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-sep 4046  ax-pow 4098  ax-pr 4131

This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ral 2421  df-rex 2422  df-v 2688  df-un 3075  df-in 3077  df-ss 3084  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-br 3930  df-opab 3990  df-mpt 3991  df-cnv 4547  df-dm 4549  df-rn 4550

This theorem is referenced by:  fliftcnv  5696  fliftfun  5697  fliftf  5700  fliftval  5701  qliftel  6509