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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 5101 | . . . 4 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) | |
| 3 | 2 | biimpi 216 | . . 3 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 → 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) |
| 4 | funcrcl 17801 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 18 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simprd 495 | 1 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∈ wcel 2114 〈cop 4588 class class class wbr 5100 (class class class)co 7370 Catccat 17601 Func cfunc 17792 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5245 ax-nul 5255 ax-pr 5381 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-xp 5640 df-dm 5644 df-iota 6458 df-fv 6510 df-ov 7373 df-oprab 7374 df-mpo 7375 df-func 17796 |
| This theorem is referenced by: imasubc2 49540 imasubc3 49544 upciclem2 49555 upciclem3 49556 upeu2 49560 uobrcl 49581 natoppfb 49619 fuco11 49714 fuco11cl 49715 fuco21 49724 fuco11b 49725 fuco11bALT 49726 fuco22natlem2 49731 fuco22natlem 49733 fucoid 49736 fucocolem1 49741 fucolid 49749 fucorid 49750 postcofval 49752 postcofcl 49753 precofval 49755 precofvalALT 49756 precofcl 49758 prcoftposcurfuco 49771 prcof1 49776 prcof2a 49777 prcof2 49778 prcofdiag1 49781 prcofdiag 49782 fucoppclem 49795 fucoppcid 49796 eufunclem 49909 diag1f1olem 49921 diag2f1olem 49924 lanval 50007 ranval 50008 lanup 50029 ranup 50030 lmdpropd 50045 cmdpropd 50046 concl 50049 coccl 50050 concom 50051 coccom 50052 islmd 50053 iscmd 50054 termolmd 50058 lmdran 50059 cmdlan 50060 |
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