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Theorem fnmpti 5386
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 ∈ V
fnmpti.2 𝐹 = (𝑥𝐴𝐵)
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 ∈ V
21rgenw 2552 . 2 𝑥𝐴 𝐵 ∈ V
3 fnmpti.2 . . 3 𝐹 = (𝑥𝐴𝐵)
43mptfng 5383 . 2 (∀𝑥𝐴 𝐵 ∈ V ↔ 𝐹 Fn 𝐴)
52, 4mpbi 145 1 𝐹 Fn 𝐴
Colors of variables: wff set class
Syntax hints:   = wceq 1364  wcel 2167  wral 2475  Vcvv 2763  cmpt 4094   Fn wfn 5253
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 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-14 2170  ax-ext 2178  ax-sep 4151  ax-pow 4207  ax-pr 4242
This theorem depends on definitions:  df-bi 117  df-3an 982  df-tru 1367  df-nf 1475  df-sb 1777  df-eu 2048  df-mo 2049  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-ral 2480  df-rex 2481  df-v 2765  df-un 3161  df-in 3163  df-ss 3170  df-pw 3607  df-sn 3628  df-pr 3629  df-op 3631  df-br 4034  df-opab 4095  df-mpt 4096  df-id 4328  df-xp 4669  df-rel 4670  df-cnv 4671  df-co 4672  df-dm 4673  df-fun 5260  df-fn 5261
This theorem is referenced by:  dmmpti  5387  fconst  5453  eufnfv  5793  idref  5803  fo1st  6215  fo2nd  6216  reldm  6244  oafnex  6502  fnoei  6510  oeiexg  6511  mapsnf1o2  6755  nninfctlemfo  12207  1arith  12536  slotslfn  12704  topnfn  12915  fn0g  13018  fnmgp  13478  rlmfn  14009  blfn  14107  fncld  14334  xmetunirn  14594
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