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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fexafv2ex | Structured version Visualization version GIF version | ||
| Description: The alternate function value is always a set if the function (resp. the domain of the function) is a set. (Contributed by AV, 3-Sep-2022.) |
| Ref | Expression |
|---|---|
| fexafv2ex | ⊢ (𝐹 ∈ 𝑉 → (𝐹''''𝐴) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | rnexg 7878 | . 2 ⊢ (𝐹 ∈ 𝑉 → ran 𝐹 ∈ V) | |
| 2 | afv2ex 47215 | . 2 ⊢ (ran 𝐹 ∈ V → (𝐹''''𝐴) ∈ V) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝐹 ∈ 𝑉 → (𝐹''''𝐴) ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2109 Vcvv 3447 ran crn 5639 ''''cafv2 47209 |
| 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-ext 2701 ax-sep 5251 ax-nul 5261 ax-pow 5320 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-sb 2066 df-clab 2708 df-cleq 2721 df-clel 2803 df-ne 2926 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-pw 4565 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-afv2 47210 |
| This theorem is referenced by: (None) |
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