Theorem fabex 7884

Description: Existence of a set of functions. (Contributed by NM, 3-Dec-2007.)

Hypotheses

Ref	Expression
fabex.1	⊢ 𝐴 ∈ V
fabex.2	⊢ 𝐵 ∈ V
fabex.3	⊢ 𝐹 = {𝑥 ∣ (𝑥:𝐴⟶𝐵 ∧ 𝜑)}

Assertion

Ref	Expression
fabex	⊢ 𝐹 ∈ V

Distinct variable groups:   𝑥,𝐴   𝑥,𝐵

Allowed substitution hints:   𝜑(𝑥)   𝐹(𝑥)

Proof of Theorem fabex

Step	Hyp	Ref	Expression
1		fabex.1	. 2 ⊢ 𝐴 ∈ V
2		fabex.2	. 2 ⊢ 𝐵 ∈ V
3		fabex.3	. . 3 ⊢ 𝐹 = {𝑥 ∣ (𝑥:𝐴⟶𝐵 ∧ 𝜑)}
4	3	fabexg 7882	. 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → 𝐹 ∈ V)
5	1, 2, 4	mp2an 693	1 ⊢ 𝐹 ∈ V

Syntax hints:   ∧ wa 395   = wceq 1542   ∈ wcel 2114  {cab 2715  Vcvv 3430  ⟶wf 6488

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709  ax-sep 5231  ax-pow 5302  ax-pr 5370  ax-un 7682

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ral 3053  df-rex 3063  df-rab 3391  df-v 3432  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-pw 4544  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-br 5087  df-opab 5149  df-xp 5630  df-rel 5631  df-cnv 5632  df-dm 5634  df-rn 5635  df-fun 6494  df-fn 6495  df-f 6496

This theorem is referenced by: (None)