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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 7004 | . . 3 ⊢ (𝐹 Fn 𝐴 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶))) | |
| 5 | 3, 4 | syl 17 | . 2 ⊢ (𝜑 → (𝐵 ∈ (◡𝐹 “ 𝐶) ↔ (𝐵 ∈ 𝐴 ∧ (𝐹‘𝐵) ∈ 𝐶))) |
| 6 | 1, 2, 5 | mpbir2and 714 | 1 ⊢ (𝜑 → 𝐵 ∈ (◡𝐹 “ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2114 ◡ccnv 5623 “ cima 5627 Fn wfn 6487 ‘cfv 6492 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pr 5370 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-id 5519 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-iota 6448 df-fun 6494 df-fn 6495 df-fv 6500 |
| This theorem is referenced by: fpwwe2lem8 10552 rhmpreimaidl 21267 evlslem3 22068 elrgspnsubrunlem2 33324 rhmpreimaprmidl 33526 ply1degltel 33669 ply1degleel 33670 ply1degltlss 33671 exsslsb 33756 ply1degltdimlem 33782 ply1degltdim 33783 dimkerim 33787 lvecendof1f1o 33793 zndvdchrrhm 42426 smfsuplem1 47257 |
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