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| Mirrors > Home > MPE Home > Th. List > difpreima | Structured version Visualization version GIF version | ||
| Description: Preimage of a difference. (Contributed by Mario Carneiro, 14-Jun-2016.) |
| Ref | Expression |
|---|---|
| difpreima | ⊢ (Fun 𝐹 → (◡𝐹 “ (𝐴 ∖ 𝐵)) = ((◡𝐹 “ 𝐴) ∖ (◡𝐹 “ 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcnvcnv 6607 | . 2 ⊢ (Fun 𝐹 → Fun ◡◡𝐹) | |
| 2 | imadif 6624 | . 2 ⊢ (Fun ◡◡𝐹 → (◡𝐹 “ (𝐴 ∖ 𝐵)) = ((◡𝐹 “ 𝐴) ∖ (◡𝐹 “ 𝐵))) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (Fun 𝐹 → (◡𝐹 “ (𝐴 ∖ 𝐵)) = ((◡𝐹 “ 𝐴) ∖ (◡𝐹 “ 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 ∖ cdif 4045 ◡ccnv 5649 “ cima 5653 Fun wfun 6532 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-br 5103 df-opab 5167 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-fun 6540 |
| This theorem is used by: gsumpropd2lem 18873 supppreima 33331 elrgspnsubrunlem2 33855 elrspunidl 34024 fsumcvg4 34628 zrhunitpreima 34654 imambfm 34940 carsggect 34996 sibfof 35018 eulerpartlemmf 35053 itg2addnclem 38682 itg2addnclem2 38683 smfresal 47891 |
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