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Theorem fnmpti 5382
Description: Functionality and domain of an ordered-pair class abstraction. (Contributed by NM, 29-Jan-2004.) (Revised by Mario Carneiro, 31-Aug-2015.)
Hypotheses
Ref Expression
fnmpti.1  |-  B  e. 
_V
fnmpti.2  |-  F  =  ( x  e.  A  |->  B )
Assertion
Ref Expression
fnmpti  |-  F  Fn  A
Distinct variable group:    x, A
Allowed substitution hints:    B( x)    F( x)

Proof of Theorem fnmpti
StepHypRef Expression
1 fnmpti.1 . . 3  |-  B  e. 
_V
21rgenw 2549 . 2  |-  A. x  e.  A  B  e.  _V
3 fnmpti.2 . . 3  |-  F  =  ( x  e.  A  |->  B )
43mptfng 5379 . 2  |-  ( A. x  e.  A  B  e.  _V  <->  F  Fn  A
)
52, 4mpbi 145 1  |-  F  Fn  A
Colors of variables: wff set class
Syntax hints:    = wceq 1364    e. wcel 2164   A.wral 2472   _Vcvv 2760    |-> cmpt 4090    Fn wfn 5249
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 710  ax-5 1458  ax-7 1459  ax-gen 1460  ax-ie1 1504  ax-ie2 1505  ax-8 1515  ax-10 1516  ax-11 1517  ax-i12 1518  ax-bndl 1520  ax-4 1521  ax-17 1537  ax-i9 1541  ax-ial 1545  ax-i5r 1546  ax-14 2167  ax-ext 2175  ax-sep 4147  ax-pow 4203  ax-pr 4238
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1472  df-sb 1774  df-eu 2045  df-mo 2046  df-clab 2180  df-cleq 2186  df-clel 2189  df-nfc 2325  df-ral 2477  df-rex 2478  df-v 2762  df-un 3157  df-in 3159  df-ss 3166  df-pw 3603  df-sn 3624  df-pr 3625  df-op 3627  df-br 4030  df-opab 4091  df-mpt 4092  df-id 4324  df-xp 4665  df-rel 4666  df-cnv 4667  df-co 4668  df-dm 4669  df-fun 5256  df-fn 5257
This theorem is referenced by:  dmmpti  5383  fconst  5449  eufnfv  5789  idref  5799  fo1st  6210  fo2nd  6211  reldm  6239  oafnex  6497  fnoei  6505  oeiexg  6506  mapsnf1o2  6750  nninfctlemfo  12177  1arith  12505  slotslfn  12644  topnfn  12855  fn0g  12958  fnmgp  13418  rlmfn  13949  fncld  14266  xmetunirn  14526
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