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| Mirrors > Home > MPE Home > Th. List > Mathboxes > funcrcl2 | 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 |
|---|---|
| funcrcl2 | ⊢ (𝜑 → 𝐷 ∈ 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 17819 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 18 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simpld 494 | 1 ⊢ (𝜑 → 𝐷 ∈ 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 7358 Catccat 17619 Func cfunc 17810 |
| 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 5368 |
| 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 5628 df-dm 5632 df-iota 6446 df-fv 6498 df-ov 7361 df-oprab 7362 df-mpo 7363 df-func 17814 |
| This theorem is referenced by: cofid1a 49584 cofid2a 49585 cofidvala 49588 cofidf2a 49589 cofidval 49591 imaid 49626 imaf1co 49627 fthcomf 49629 upciclem3 49640 upciclem4 49641 upeu 49643 upeu2 49644 uobrcl 49665 upeu4 49668 uptrlem1 49682 natoppfb 49703 fuco11 49798 fuco11cl 49799 fuco21 49808 fuco11b 49809 fuco11bALT 49810 fucoid 49820 fucolid 49833 fucorid 49834 postcofval 49836 postcofcl 49837 precofval 49839 precofvalALT 49840 precofcl 49842 prcof1 49860 prcof2a 49861 prcof2 49862 prcofdiag1 49865 prcofdiag 49866 fucoppclem 49879 fucoppcid 49880 thincciso2 49927 isinito2 49971 isinito3 49972 eufunclem 49993 funcsn 50013 cofuterm 50017 isinito4 50019 lanval 50091 ranval 50092 lmdpropd 50129 cmdpropd 50130 concl 50133 coccl 50134 concom 50135 coccom 50136 islmd 50137 iscmd 50138 |
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