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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 7887 | . 2 ⊢ (𝐹 ∈ 𝑉 → ran 𝐹 ∈ V) | |
| 2 | afv2ex 47806 | . 2 ⊢ (ran 𝐹 ∈ V → (𝐹''''𝐴) ∈ V) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝐹 ∈ 𝑉 → (𝐹''''𝐴) ∈ V) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2145 Vcvv 3457 ran crn 5653 ''''cafv2 47800 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-ne 2961 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-opab 5168 df-cnv 5660 df-dm 5662 df-rn 5663 df-iota 6481 df-afv2 47801 |
| This theorem is referenced by: (None) |
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