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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 7944 | . 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 1570 ∈ wcel 2146 {cab 2744 Vcvv 3458 ⟶wf 6539 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2738 ax-sep 5262 ax-pow 5341 ax-pr 5409 ax-un 7745 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2745 df-cleq 2758 df-clel 2841 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-xp 5672 df-rel 5673 df-cnv 5674 df-dm 5676 df-rn 5677 df-fun 6545 df-fn 6546 df-f 6547 |
| This theorem is used by: (None) |
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