Theorem elrnmpti 4864

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 2525	. 2 |- A. x e. A B e. _V
3		rnmpt.1	. . 3 |- F = ( x e. A |-> B )
4	3	elrnmptg 4863	. 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 1348   e. wcel 2141   A.wral 2448   E.wrex 2449   _Vcvv 2730   |-> cmpt 4050   ran crn 4612

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 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-pr 4194

This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ral 2453  df-rex 2454  df-v 2732  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-br 3990  df-opab 4051  df-mpt 4052  df-cnv 4619  df-dm 4621  df-rn 4622

This theorem is referenced by:  elrest  12586