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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 7844 | . 2 ⊢ (𝐹 ∈ 𝑉 → ran 𝐹 ∈ V) | |
| 2 | afv2ex 47456 | . 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 2113 Vcvv 3440 ran crn 5625 ''''cafv2 47450 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2708 ax-sep 5241 ax-nul 5251 ax-pow 5310 ax-pr 5377 ax-un 7680 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-ne 2933 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-in 3908 df-ss 3918 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4581 df-pr 4583 df-op 4587 df-uni 4864 df-br 5099 df-opab 5161 df-cnv 5632 df-dm 5634 df-rn 5635 df-iota 6448 df-afv2 47451 |
| This theorem is referenced by: (None) |
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