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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 5112 | . . . 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 17942 | . . 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 500 | 1 ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2146 〈cop 4597 class class class wbr 5111 (class class class)co 7419 Catccat 17742 Func cfunc 17933 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pr 5406 |
| 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 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-xp 5669 df-dm 5673 df-iota 6496 df-fv 6548 df-ov 7422 df-oprab 7423 df-mpo 7424 df-func 17937 |
| This theorem is used by: cofid1a 49947 cofid2a 49948 cofidvala 49951 cofidf2a 49952 cofidval 49954 imaid 49989 imaf1co 49990 fthcomf 49992 upciclem3 50003 upciclem4 50004 upeu 50006 upeu2 50007 uobrcl 50028 upeu4 50031 uptrlem1 50045 natoppfb 50066 fuco11 50161 fuco11cl 50162 fuco21 50171 fuco11b 50172 fuco11bALT 50173 fucoid 50183 fucolid 50196 fucorid 50197 postcofval 50199 postcofcl 50200 precofval 50202 precofvalALT 50203 precofcl 50205 prcof1 50223 prcof2a 50224 prcof2 50225 prcofdiag1 50228 prcofdiag 50229 fucoppclem 50242 fucoppcid 50243 thincciso2 50290 isinito2 50334 isinito3 50335 eufunclem 50356 funcsn 50376 cofuterm 50380 isinito4 50382 lanval 50454 ranval 50455 lmdpropd 50492 cmdpropd 50493 concl 50496 coccl 50497 concom 50498 coccom 50499 islmd 50500 iscmd 50501 |
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