Theorem elrnmpti 4857

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 2521	. 2 |- A. x e. A B e. _V
3		rnmpt.1	. . 3 |- F = ( x e. A |-> B )
4	3	elrnmptg 4856	. 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 104   = wceq 1343   e. wcel 2136   A.wral 2444   E.wrex 2445   _Vcvv 2726   |-> cmpt 4043   ran crn 4605

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 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-14 2139  ax-ext 2147  ax-sep 4100  ax-pow 4153  ax-pr 4187

This theorem depends on definitions:  df-bi 116  df-3an 970  df-tru 1346  df-nf 1449  df-sb 1751  df-eu 2017  df-mo 2018  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-ral 2449  df-rex 2450  df-v 2728  df-un 3120  df-in 3122  df-ss 3129  df-pw 3561  df-sn 3582  df-pr 3583  df-op 3585  df-br 3983  df-opab 4044  df-mpt 4045  df-cnv 4612  df-dm 4614  df-rn 4615

This theorem is referenced by:  elrest  12563