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Theorem funpr 6609
Description: A function with a domain of two elements. (Contributed by Jeff Madsen, 20-Jun-2010.)
Hypotheses
Ref Expression
funpr.1 𝐴 ∈ V
funpr.2 𝐵 ∈ V
funpr.3 𝐶 ∈ V
funpr.4 𝐷 ∈ V
Assertion
Ref Expression
funpr (𝐴𝐵 → Fun {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩})

Proof of Theorem funpr
StepHypRef Expression
1 funpr.1 . . 3 𝐴 ∈ V
2 funpr.2 . . 3 𝐵 ∈ V
31, 2pm3.2i 470 . 2 (𝐴 ∈ V ∧ 𝐵 ∈ V)
4 funpr.3 . . 3 𝐶 ∈ V
5 funpr.4 . . 3 𝐷 ∈ V
64, 5pm3.2i 470 . 2 (𝐶 ∈ V ∧ 𝐷 ∈ V)
7 funprg 6607 . 2 (((𝐴 ∈ V ∧ 𝐵 ∈ V) ∧ (𝐶 ∈ V ∧ 𝐷 ∈ V) ∧ 𝐴𝐵) → Fun {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩})
83, 6, 7mp3an12 1448 1 (𝐴𝐵 → Fun {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩})
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  wcel 2099  wne 2937  Vcvv 3471  {cpr 4631  cop 4635  Fun wfun 6542
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1790  ax-4 1804  ax-5 1906  ax-6 1964  ax-7 2004  ax-8 2101  ax-9 2109  ax-12 2167  ax-ext 2699  ax-sep 5299  ax-nul 5306  ax-pr 5429
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 847  df-3an 1087  df-tru 1537  df-fal 1547  df-ex 1775  df-sb 2061  df-mo 2530  df-clab 2706  df-cleq 2720  df-clel 2806  df-ne 2938  df-ral 3059  df-rex 3068  df-rab 3430  df-v 3473  df-dif 3950  df-un 3952  df-in 3954  df-ss 3964  df-nul 4324  df-if 4530  df-sn 4630  df-pr 4632  df-op 4636  df-br 5149  df-opab 5211  df-id 5576  df-xp 5684  df-rel 5685  df-cnv 5686  df-co 5687  df-dm 5688  df-fun 6550
This theorem is referenced by:  funtp  6610  fpr  7163  fnprb  7220  1sdomOLD  9273
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