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| Mirrors > Home > MPE Home > Th. List > Mathboxes > funcrcl2 | Structured version Visualization version GIF version | ||
| Description: Reverse closure for a functor. (Contributed by Zhi Wang, 17-Sep-2025.) |
| Ref | Expression |
|---|---|
| funcrcl2.f | ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) |
| Ref | Expression |
|---|---|
| funcrcl2 | ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcrcl2.f | . . 3 ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) | |
| 2 | df-br 5101 | . . . 4 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) | |
| 3 | 2 | biimpi 216 | . . 3 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 → 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) |
| 4 | funcrcl 17799 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 18 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simpld 494 | 1 ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2114 〈cop 4588 class class class wbr 5100 (class class class)co 7368 Catccat 17599 Func cfunc 17790 |
| 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-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-nul 5253 ax-pr 5379 |
| 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-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-xp 5638 df-dm 5642 df-iota 6456 df-fv 6508 df-ov 7371 df-oprab 7372 df-mpo 7373 df-func 17794 |
| This theorem is referenced by: cofid1a 49471 cofid2a 49472 cofidvala 49475 cofidf2a 49476 cofidval 49478 imaid 49513 imaf1co 49514 fthcomf 49516 upciclem3 49527 upciclem4 49528 upeu 49530 upeu2 49531 uobrcl 49552 upeu4 49555 uptrlem1 49569 natoppfb 49590 fuco11 49685 fuco11cl 49686 fuco21 49695 fuco11b 49696 fuco11bALT 49697 fucoid 49707 fucolid 49720 fucorid 49721 postcofval 49723 postcofcl 49724 precofval 49726 precofvalALT 49727 precofcl 49729 prcof1 49747 prcof2a 49748 prcof2 49749 prcofdiag1 49752 prcofdiag 49753 fucoppclem 49766 fucoppcid 49767 thincciso2 49814 isinito2 49858 isinito3 49859 eufunclem 49880 funcsn 49900 cofuterm 49904 isinito4 49906 lanval 49978 ranval 49979 lmdpropd 50016 cmdpropd 50017 concl 50020 coccl 50021 concom 50022 coccom 50023 islmd 50024 iscmd 50025 |
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