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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 5104 | . . . 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 18031 | . . 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 501 | 1 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 〈cop 4590 class class class wbr 5103 (class class class)co 7418 Catccat 17831 Func cfunc 18022 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pr 5391 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-xp 5657 df-dm 5661 df-iota 6493 df-fv 6545 df-ov 7421 df-oprab 7422 df-mpo 7423 df-func 18026 |
| This theorem is used by: imasubc2 50229 imasubc3 50233 upciclem2 50244 upciclem3 50245 upeu2 50249 uobrcl 50270 natoppfb 50308 fuco11 50403 fuco11cl 50404 fuco21 50413 fuco11b 50414 fuco11bALT 50415 fuco22natlem2 50420 fuco22natlem 50422 fucoid 50425 fucocolem1 50430 fucolid 50438 fucorid 50439 postcofval 50441 postcofcl 50442 precofval 50444 precofvalALT 50445 precofcl 50447 prcoftposcurfuco 50460 prcof1 50465 prcof2a 50466 prcof2 50467 prcofdiag1 50470 prcofdiag 50471 fucoppclem 50484 fucoppcid 50485 eufunclem 50598 diag1f1olem 50610 diag2f1olem 50613 lanval 50696 ranval 50697 lanup 50718 ranup 50719 lmdpropd 50734 cmdpropd 50735 concl 50738 coccl 50739 concom 50740 coccom 50741 islmd 50742 iscmd 50743 termolmd 50747 lmdran 50748 cmdlan 50749 |
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