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| Mirrors > Home > MPE Home > Th. List > elpreimad | Structured version Visualization version GIF version | ||
| Description: Membership in the preimage of a set under a function. (Contributed by Glauco Siliprandi, 23-Oct-2021.) |
| Ref | Expression |
|---|---|
| elpreimad.f | ⊢ (𝜑 → 𝐹 Fn 𝐴) |
| elpreimad.b | ⊢ (𝜑 → 𝐵 ∈ 𝐴) |
| elpreimad.c | ⊢ (𝜑 → (𝐹‘𝐵) ∈ 𝐶) |
| Ref | Expression |
|---|---|
| elpreimad | ⊢ (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elpreimad.b | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝐴) | |
| 2 | elpreimad.c | . 2 ⊢ (𝜑 → (𝐹‘𝐵) ∈ 𝐶) | |
| 3 | elpreimad.f | . . 3 ⊢ (𝜑 → 𝐹 Fn 𝐴) | |
| 4 | elpreima 7051 | . . 3 ⊢ (𝐹 Fn 𝐴 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶))) | |
| 5 | 3, 4 | syl 18 | . 2 ⊢ (𝜑 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶))) |
| 6 | 1, 2, 5 | mpbir2and 725 | 1 ⊢ (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∈ wcel 2149 ◡ccnv 5658 “ cima 5662 Fn wfn 6529 ‘cfv 6534 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pr 5402 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-ne 2965 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5111 df-opab 5175 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6490 df-fun 6536 df-fn 6537 df-fv 6542 |
| This theorem is referenced by: fpwwe2lem8 10619 rhmpreimaidl 21383 rhmpreimaprmidl 21444 evlslem3 22196 elrgspnsubrunlem2 33505 ply1degltel 33825 ply1degleel 33826 ply1degltlss 33827 exsslsb 33928 ply1degltdimlem 33953 ply1degltdim 33954 dimkerim 33958 lvecendof1f1o 33964 zndvdchrrhm 42625 smfsuplem1 47412 |
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