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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 5086 | . . . 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 17830 | . . 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 4573 class class class wbr 5085 (class class class)co 7367 Catccat 17630 Func cfunc 17821 |
| 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 2708 ax-sep 5231 ax-nul 5241 ax-pr 5375 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-opab 5148 df-xp 5637 df-dm 5641 df-iota 6454 df-fv 6506 df-ov 7370 df-oprab 7371 df-mpo 7372 df-func 17825 |
| This theorem is referenced by: imasubc2 49627 imasubc3 49631 upciclem2 49642 upciclem3 49643 upeu2 49647 uobrcl 49668 natoppfb 49706 fuco11 49801 fuco11cl 49802 fuco21 49811 fuco11b 49812 fuco11bALT 49813 fuco22natlem2 49818 fuco22natlem 49820 fucoid 49823 fucocolem1 49828 fucolid 49836 fucorid 49837 postcofval 49839 postcofcl 49840 precofval 49842 precofvalALT 49843 precofcl 49845 prcoftposcurfuco 49858 prcof1 49863 prcof2a 49864 prcof2 49865 prcofdiag1 49868 prcofdiag 49869 fucoppclem 49882 fucoppcid 49883 eufunclem 49996 diag1f1olem 50008 diag2f1olem 50011 lanval 50094 ranval 50095 lanup 50116 ranup 50117 lmdpropd 50132 cmdpropd 50133 concl 50136 coccl 50137 concom 50138 coccom 50139 islmd 50140 iscmd 50141 termolmd 50145 lmdran 50146 cmdlan 50147 |
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