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Theorem fnmpoi 6299
Description: Functionality and domain of a class given by the maps-to notation. (Contributed by FL, 17-May-2010.)
Hypotheses
Ref Expression
fmpo.1 𝐹 = (𝑥𝐴, 𝑦𝐵𝐶)
fnmpoi.2 𝐶 ∈ V
Assertion
Ref Expression
fnmpoi 𝐹 Fn (𝐴 × 𝐵)
Distinct variable groups:   𝑥,𝐴,𝑦   𝑥,𝐵,𝑦
Allowed substitution hints:   𝐶(𝑥,𝑦)   𝐹(𝑥,𝑦)

Proof of Theorem fnmpoi
StepHypRef Expression
1 fnmpoi.2 . . 3 𝐶 ∈ V
21rgen2w 2563 . 2 𝑥𝐴𝑦𝐵 𝐶 ∈ V
3 fmpo.1 . . 3 𝐹 = (𝑥𝐴, 𝑦𝐵𝐶)
43fnmpo 6298 . 2 (∀𝑥𝐴𝑦𝐵 𝐶 ∈ V → 𝐹 Fn (𝐴 × 𝐵))
52, 4ax-mp 5 1 𝐹 Fn (𝐴 × 𝐵)
Colors of variables: wff set class
Syntax hints:   = wceq 1373  wcel 2177  wral 2485  Vcvv 2773   × cxp 4678   Fn wfn 5272  cmpo 5956
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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-13 2179  ax-14 2180  ax-ext 2188  ax-sep 4167  ax-pow 4223  ax-pr 4258  ax-un 4485
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1485  df-sb 1787  df-eu 2058  df-mo 2059  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ral 2490  df-rex 2491  df-rab 2494  df-v 2775  df-sbc 3001  df-csb 3096  df-un 3172  df-in 3174  df-ss 3181  df-pw 3620  df-sn 3641  df-pr 3642  df-op 3644  df-uni 3854  df-iun 3932  df-br 4049  df-opab 4111  df-mpt 4112  df-id 4345  df-xp 4686  df-rel 4687  df-cnv 4688  df-co 4689  df-dm 4690  df-rn 4691  df-res 4692  df-ima 4693  df-iota 5238  df-fun 5279  df-fn 5280  df-f 5281  df-fv 5285  df-oprab 5958  df-mpo 5959  df-1st 6236  df-2nd 6237
This theorem is referenced by:  dmmpo  6300  fnoa  6543  fnom  6546  fnoei  6548  fnmap  6752  fnpm  6753  restfn  13125  fngsum  13270  fnpsr  14479  fnmpl  14505
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