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Theorem elpmi 6831
Description: A partial function is a function. (Contributed by Mario Carneiro, 15-Sep-2015.)
Assertion
Ref Expression
elpmi  |-  ( F  e.  ( A  ^pm  B )  ->  ( F : dom  F --> A  /\  dom  F  C_  B )
)

Proof of Theorem elpmi
Dummy variables  x  f  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-pm 6815 . . . 4  |-  ^pm  =  ( x  e.  _V ,  y  e.  _V  |->  { f  e.  ~P ( y  X.  x
)  |  Fun  f } )
21elmpocl 6212 . . 3  |-  ( F  e.  ( A  ^pm  B )  ->  ( A  e.  _V  /\  B  e. 
_V ) )
3 elpm2g 6829 . . 3  |-  ( ( A  e.  _V  /\  B  e.  _V )  ->  ( F  e.  ( A  ^pm  B )  <->  ( F : dom  F --> A  /\  dom  F  C_  B ) ) )
42, 3syl 14 . 2  |-  ( F  e.  ( A  ^pm  B )  ->  ( F  e.  ( A  ^pm  B
)  <->  ( F : dom  F --> A  /\  dom  F 
C_  B ) ) )
54ibi 176 1  |-  ( F  e.  ( A  ^pm  B )  ->  ( F : dom  F --> A  /\  dom  F  C_  B )
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    <-> wb 105    e. wcel 2200   {crab 2512   _Vcvv 2800    C_ wss 3198   ~Pcpw 3650    X. cxp 4721   dom cdm 4723   Fun wfun 5318   -->wf 5320  (class class class)co 6013    ^pm cpm 6813
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-in1 617  ax-in2 618  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-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4205  ax-pow 4262  ax-pr 4297  ax-un 4528  ax-setind 4633
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-fal 1401  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-ne 2401  df-ral 2513  df-rex 2514  df-rab 2517  df-v 2802  df-sbc 3030  df-dif 3200  df-un 3202  df-in 3204  df-ss 3211  df-pw 3652  df-sn 3673  df-pr 3674  df-op 3676  df-uni 3892  df-br 4087  df-opab 4149  df-id 4388  df-xp 4729  df-rel 4730  df-cnv 4731  df-co 4732  df-dm 4733  df-rn 4734  df-iota 5284  df-fun 5326  df-fn 5327  df-f 5328  df-fv 5332  df-ov 6016  df-oprab 6017  df-mpo 6018  df-pm 6815
This theorem is referenced by:  pmfun  6832  pmresg  6840  ennnfonelemg  13014  ennnfonelemf1  13029  reldvg  15393  dvbsssg  15400  dvfgg  15402
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