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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 5087 | . . . 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 17821 | . . 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 4574 class class class wbr 5086 (class class class)co 7360 Catccat 17621 Func cfunc 17812 |
| 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 5231 ax-nul 5241 ax-pr 5370 |
| 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 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-xp 5630 df-dm 5634 df-iota 6448 df-fv 6500 df-ov 7363 df-oprab 7364 df-mpo 7365 df-func 17816 |
| This theorem is referenced by: imasubc2 49639 imasubc3 49643 upciclem2 49654 upciclem3 49655 upeu2 49659 uobrcl 49680 natoppfb 49718 fuco11 49813 fuco11cl 49814 fuco21 49823 fuco11b 49824 fuco11bALT 49825 fuco22natlem2 49830 fuco22natlem 49832 fucoid 49835 fucocolem1 49840 fucolid 49848 fucorid 49849 postcofval 49851 postcofcl 49852 precofval 49854 precofvalALT 49855 precofcl 49857 prcoftposcurfuco 49870 prcof1 49875 prcof2a 49876 prcof2 49877 prcofdiag1 49880 prcofdiag 49881 fucoppclem 49894 fucoppcid 49895 eufunclem 50008 diag1f1olem 50020 diag2f1olem 50023 lanval 50106 ranval 50107 lanup 50128 ranup 50129 lmdpropd 50144 cmdpropd 50145 concl 50148 coccl 50149 concom 50150 coccom 50151 islmd 50152 iscmd 50153 termolmd 50157 lmdran 50158 cmdlan 50159 |
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