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| Mirrors > Home > MPE Home > Th. List > fvclex | Structured version Visualization version GIF version | ||
| Description: Existence of the class of values of a set. (Contributed by NM, 9-Nov-1995.) |
| Ref | Expression |
|---|---|
| fvclex.1 | ⊢ 𝐹 ∈ V |
| Ref | Expression |
|---|---|
| fvclex | ⊢ {𝑦 ∣ ∃𝑥 𝑦 = (𝐹‘𝑥)} ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvclex.1 | . . . 4 ⊢ 𝐹 ∈ V | |
| 2 | 1 | rnex 7886 | . . 3 ⊢ ran 𝐹 ∈ V |
| 3 | snex 5391 | . . 3 ⊢ {∅} ∈ V | |
| 4 | 2, 3 | unex 7720 | . 2 ⊢ (ran 𝐹 ∪ {∅}) ∈ V |
| 5 | fvclss 7215 | . 2 ⊢ {𝑦 ∣ ∃𝑥 𝑦 = (𝐹‘𝑥)} ⊆ (ran 𝐹 ∪ {∅}) | |
| 6 | 4, 5 | ssexi 5277 | 1 ⊢ {𝑦 ∣ ∃𝑥 𝑦 = (𝐹‘𝑥)} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∃wex 1779 ∈ wcel 2109 {cab 2707 Vcvv 3447 ∪ cun 3912 ∅c0 4296 {csn 4589 ran crn 5639 ‘cfv 6511 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pr 5387 ax-un 7711 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3406 df-v 3449 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-nul 4297 df-if 4489 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-br 5108 df-opab 5170 df-cnv 5646 df-dm 5648 df-rn 5649 df-iota 6464 df-fv 6519 |
| This theorem is referenced by: fvresex 7938 |
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