Theorem elrnmpti 4991

Description: Membership in the range of a function. (Contributed by NM, 30-Aug-2004.) (Revised by Mario Carneiro, 31-Aug-2015.)

Hypotheses

Ref	Expression
rnmpt.1	|- F = ( x e. A |-> B )
elrnmpti.2	|- B e. _V

Assertion

Ref	Expression
elrnmpti	|- ( C e. ran F <-> E. x e. A C = B )

Distinct variable group:   x, C

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

Proof of Theorem elrnmpti

Step	Hyp	Ref	Expression
1		elrnmpti.2	. . 3 |- B e. _V
2	1	rgenw 2588	. 2 |- A. x e. A B e. _V
3		rnmpt.1	. . 3 |- F = ( x e. A |-> B )
4	3	elrnmptg 4990	. 2 |- ( A. x e. A B e. _V -> ( C e. ran F <-> E. x e. A C = B ) )
5	2, 4	ax-mp 5	1 |- ( C e. ran F <-> E. x e. A C = B )

Syntax hints:   <-> wb 105   = wceq 1398   e. wcel 2202   A.wral 2511   E.wrex 2512   _Vcvv 2803   |-> cmpt 4155   ran crn 4732

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 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270  ax-pr 4305

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-ral 2516  df-rex 2517  df-v 2805  df-un 3205  df-in 3207  df-ss 3214  df-pw 3658  df-sn 3679  df-pr 3680  df-op 3682  df-br 4094  df-opab 4156  df-mpt 4157  df-cnv 4739  df-dm 4741  df-rn 4742

This theorem is referenced by:  elrest  13409