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Theorem exse2 5110
Description: Any set relation is set-like. (Contributed by Mario Carneiro, 22-Jun-2015.)
Assertion
Ref Expression
exse2  |-  ( R  e.  V  ->  R Se  A )

Proof of Theorem exse2
Dummy variables  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-rab 2519 . . . . 5  |-  { y  e.  A  |  y R x }  =  { y  |  ( y  e.  A  /\  y R x ) }
2 vex 2805 . . . . . . . 8  |-  y  e. 
_V
3 vex 2805 . . . . . . . 8  |-  x  e. 
_V
42, 3breldm 4935 . . . . . . 7  |-  ( y R x  ->  y  e.  dom  R )
54adantl 277 . . . . . 6  |-  ( ( y  e.  A  /\  y R x )  -> 
y  e.  dom  R
)
65abssi 3302 . . . . 5  |-  { y  |  ( y  e.  A  /\  y R x ) }  C_  dom  R
71, 6eqsstri 3259 . . . 4  |-  { y  e.  A  |  y R x }  C_  dom  R
8 dmexg 4996 . . . 4  |-  ( R  e.  V  ->  dom  R  e.  _V )
9 ssexg 4228 . . . 4  |-  ( ( { y  e.  A  |  y R x }  C_  dom  R  /\  dom  R  e.  _V )  ->  { y  e.  A  |  y R x }  e.  _V )
107, 8, 9sylancr 414 . . 3  |-  ( R  e.  V  ->  { y  e.  A  |  y R x }  e.  _V )
1110ralrimivw 2606 . 2  |-  ( R  e.  V  ->  A. x  e.  A  { y  e.  A  |  y R x }  e.  _V )
12 df-se 4430 . 2  |-  ( R Se  A  <->  A. x  e.  A  { y  e.  A  |  y R x }  e.  _V )
1311, 12sylibr 134 1  |-  ( R  e.  V  ->  R Se  A )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    e. wcel 2202   {cab 2217   A.wral 2510   {crab 2514   _Vcvv 2802    C_ wss 3200   class class class wbr 4088   Se wse 4426   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-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-opab 4151  df-se 4430  df-cnv 4733  df-dm 4735  df-rn 4736
This theorem is referenced by: (None)
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