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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 5114 | . . . 4 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) | |
| 3 | 2 | biimpi 219 | . . 3 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 → 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) |
| 4 | funcrcl 17919 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 19 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simpld 499 | 1 ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∈ wcel 2149 〈cop 4600 class class class wbr 5113 (class class class)co 7411 Catccat 17719 Func cfunc 17910 |
| 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-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5261 ax-nul 5271 ax-pr 5405 |
| 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-nfc 2918 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 4493 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-xp 5668 df-dm 5672 df-iota 6493 df-fv 6545 df-ov 7414 df-oprab 7415 df-mpo 7416 df-func 17914 |
| This theorem is referenced by: cofid1a 49774 cofid2a 49775 cofidvala 49778 cofidf2a 49779 cofidval 49781 imaid 49816 imaf1co 49817 fthcomf 49819 upciclem3 49830 upciclem4 49831 upeu 49833 upeu2 49834 uobrcl 49855 upeu4 49858 uptrlem1 49872 natoppfb 49893 fuco11 49988 fuco11cl 49989 fuco21 49998 fuco11b 49999 fuco11bALT 50000 fucoid 50010 fucolid 50023 fucorid 50024 postcofval 50026 postcofcl 50027 precofval 50029 precofvalALT 50030 precofcl 50032 prcof1 50050 prcof2a 50051 prcof2 50052 prcofdiag1 50055 prcofdiag 50056 fucoppclem 50069 fucoppcid 50070 thincciso2 50117 isinito2 50161 isinito3 50162 eufunclem 50183 funcsn 50203 cofuterm 50207 isinito4 50209 lanval 50281 ranval 50282 lmdpropd 50319 cmdpropd 50320 concl 50323 coccl 50324 concom 50325 coccom 50326 islmd 50327 iscmd 50328 |
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