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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 5109 | . . . 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 18088 | . . 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 2147 〈cop 4840 class class class wbr 5108 (class class class)co 7451 Catccat 17888 Func cfunc 18079 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 ax-pr 5398 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-xp 5664 df-dm 5668 df-iota 6520 df-fv 6574 df-ov 7454 df-oprab 7455 df-mpo 7456 df-func 18083 |
| This theorem is used by: cofid1a 50559 cofid2a 50560 cofidvala 50563 cofidf2a 50564 cofidval 50566 imaid 50601 imaf1co 50602 fthcomf 50604 upciclem3 50615 upciclem4 50616 upeu 50618 upeu2 50619 uobrcl 50640 upeu4 50643 uptrlem1 50657 natoppfb 50684 fuco11 50779 fuco11cl 50780 fuco21 50789 fuco11b 50790 fuco11bALT 50791 fucoid 50801 fucolid 50814 fucorid 50815 postcofval 50827 postcofcl 50828 precofval 50833 precofvalALT 50834 precofcl 50836 prcof1 50854 prcof2a 50855 prcof2 50856 prcofdiag1 50859 prcofdiag 50860 fucoppclem 50873 fucoppcid 50874 thincciso2 50921 isinito2 50965 isinito3 50966 eufunclem 50987 funcsn 51010 cofuterm 51014 isinito4 51016 lanval 51133 ranval 51134 lmdpropd 51171 cmdpropd 51172 concl 51175 coccl 51176 concom 51177 coccom 51178 islmd 51179 iscmd 51180 |
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