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| Mirrors > Home > MPE Home > Th. List > fabex | Structured version Visualization version GIF version | ||
| Description: Existence of a set of functions. (Contributed by NM, 3-Dec-2007.) |
| Ref | Expression |
|---|---|
| fabex.1 | ⊢ 𝐴 ∈ V |
| fabex.2 | ⊢ 𝐵 ∈ V |
| fabex.3 | ⊢ 𝐹 = {𝑥 ∣ (𝑥:𝐴⟶𝐵 ∧ 𝜑)} |
| Ref | Expression |
|---|---|
| fabex | ⊢ 𝐹 ∈ V |
| 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 7951 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → 𝐹 ∈ V) |
| 5 | 1, 2, 4 | mp2an 705 | 1 ⊢ 𝐹 ∈ V |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ wa 401 = wceq 1569 ∈ wcel 2144 {cab 2738 Vcvv 3450 ⟶wf 6535 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-sep 5248 ax-pow 5326 ax-pr 5390 ax-un 7752 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-xp 5656 df-rel 5657 df-cnv 5658 df-dm 5660 df-rn 5661 df-fun 6541 df-fn 6542 df-f 6543 |
| This theorem is used by: (None) |
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