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| Mirrors > Home > MPE Home > Th. List > Mathboxes > funcrcl3 | 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 |
|---|---|
| funcrcl3 | ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funcrcl2.f | . . 3 ⊢ (𝜑 → 𝐹(𝐷 Func 𝐸)𝐺) | |
| 2 | df-br 5110 | . . . 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 17915 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 19 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simprd 500 | 1 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∈ wcel 2143 〈cop 4595 class class class wbr 5109 (class class class)co 7410 Catccat 17715 Func cfunc 17906 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-nul 5269 ax-pr 5404 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4873 df-br 5110 df-opab 5174 df-xp 5667 df-dm 5671 df-iota 6492 df-fv 6544 df-ov 7413 df-oprab 7414 df-mpo 7415 df-func 17910 |
| This theorem is referenced by: imasubc2 49930 imasubc3 49934 upciclem2 49945 upciclem3 49946 upeu2 49950 uobrcl 49971 natoppfb 50009 fuco11 50104 fuco11cl 50105 fuco21 50114 fuco11b 50115 fuco11bALT 50116 fuco22natlem2 50121 fuco22natlem 50123 fucoid 50126 fucocolem1 50131 fucolid 50139 fucorid 50140 postcofval 50142 postcofcl 50143 precofval 50145 precofvalALT 50146 precofcl 50148 prcoftposcurfuco 50161 prcof1 50166 prcof2a 50167 prcof2 50168 prcofdiag1 50171 prcofdiag 50172 fucoppclem 50185 fucoppcid 50186 eufunclem 50299 diag1f1olem 50311 diag2f1olem 50314 lanval 50397 ranval 50398 lanup 50419 ranup 50420 lmdpropd 50435 cmdpropd 50436 concl 50439 coccl 50440 concom 50441 coccom 50442 islmd 50443 iscmd 50444 termolmd 50448 lmdran 50449 cmdlan 50450 |
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