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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 7050 | . . 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 726 | 1 ⊢ (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∈ wcel 2145 ◡ccnv 5654 “ cima 5658 Fn wfn 6528 ‘cfv 6533 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-fv 6541 |
| This theorem is used by: fpwwe2lem8 10647 rhmpreimaidl 21479 rhmpreimaprmidl 21542 evlslem3 22296 elrgspnsubrunlem2 33688 ply1degltel 34004 ply1degleel 34005 ply1degltlss 34006 exsslsb 34107 ply1degltdimlem 34132 ply1degltdim 34133 dimkerim 34137 lvecendof1f1o 34143 zndvdchrrhm 42839 smfsuplem1 47639 |
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