Theorem eldm2g 4927

Description: Domain membership. Theorem 4 of [Suppes] p. 59. (Contributed by NM, 27-Jan-1997.) (Revised by Mario Carneiro, 9-Jul-2014.)

Assertion

Ref	Expression
eldm2g	|- ( A e. V -> ( A e. dom B <-> E. y <. A , y >. e. B ) )

Distinct variable groups:   y, A   y, B

Allowed substitution hint:   V( y)

Proof of Theorem eldm2g

Step	Hyp	Ref	Expression
1		eldmg 4926	. 2 |- ( A e. V -> ( A e. dom B <-> E. y A B y ) )
2		df-br 4089	. . 3 |- ( A B y <-> <. A , y >. e. B )
3	2	exbii 1653	. 2 |- ( E. y A B y <-> E. y <. A , y >. e. B )
4	1, 3	bitrdi 196	1 |- ( A e. V -> ( A e. dom B <-> E. y <. A , y >. e. B ) )

Syntax hints:   -> wi 4   <-> wb 105   E.wex 1540   e. wcel 2202   <.cop 3672   class class class wbr 4088   dom cdm 4725

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-v 2804  df-un 3204  df-sn 3675  df-pr 3676  df-op 3678  df-br 4089  df-dm 4735

This theorem is referenced by:  eldm2  4929  opeldmg  4936  dmfco  5714  releldm2  6347  elmpom  6402  tfrlem9  6484  climcau  11907  lmff  14972