Theorem elrng 4913

Description: Membership in a range. (Contributed by Scott Fenton, 2-Feb-2011.)

Assertion

Ref	Expression
elrng	|- ( A e. V -> ( A e. ran B <-> E. x x B A ) )

Distinct variable groups:   x, A   x, B

Allowed substitution hint:   V( x)

Proof of Theorem elrng

Step	Hyp	Ref	Expression
1		elrn2g 4912	. 2 |- ( A e. V -> ( A e. ran B <-> E. x <. x , A >. e. B ) )
2		df-br 4084	. . 3 |- ( x B A <-> <. x , A >. e. B )
3	2	exbii 1651	. 2 |- ( E. x x B A <-> E. x <. x , A >. e. B )
4	1, 3	bitr4di 198	1 |- ( A e. V -> ( A e. ran B <-> E. x x B A ) )

Syntax hints:   -> wi 4   <-> wb 105   E.wex 1538   e. wcel 2200   <.cop 3669   class class class wbr 4083   ran crn 4720

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 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-14 2203  ax-ext 2211  ax-sep 4202  ax-pow 4258  ax-pr 4293

This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-v 2801  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-br 4084  df-opab 4146  df-cnv 4727  df-dm 4729  df-rn 4730

This theorem is referenced by:  ssrelrn  4914  relelrnb  4962  wlkvtxiedg  16056  wlkvtxiedgg  16057