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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 5101 | . . . 4 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) | |
| 3 | 2 | biimpi 218 | . . 3 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 → 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) |
| 4 | funcrcl 17896 | . . 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 498 | 1 ⊢ (𝜑 → 𝐷 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2142 〈cop 4588 class class class wbr 5100 (class class class)co 7396 Catccat 17696 Func cfunc 17887 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5246 ax-nul 5256 ax-pr 5390 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-xp 5653 df-dm 5657 df-iota 6477 df-fv 6529 df-ov 7399 df-oprab 7400 df-mpo 7401 df-func 17891 |
| This theorem is referenced by: cofid1a 49733 cofid2a 49734 cofidvala 49737 cofidf2a 49738 cofidval 49740 imaid 49775 imaf1co 49776 fthcomf 49778 upciclem3 49789 upciclem4 49790 upeu 49792 upeu2 49793 uobrcl 49814 upeu4 49817 uptrlem1 49831 natoppfb 49852 fuco11 49947 fuco11cl 49948 fuco21 49957 fuco11b 49958 fuco11bALT 49959 fucoid 49969 fucolid 49982 fucorid 49983 postcofval 49985 postcofcl 49986 precofval 49988 precofvalALT 49989 precofcl 49991 prcof1 50009 prcof2a 50010 prcof2 50011 prcofdiag1 50014 prcofdiag 50015 fucoppclem 50028 fucoppcid 50029 thincciso2 50076 isinito2 50120 isinito3 50121 eufunclem 50142 funcsn 50162 cofuterm 50166 isinito4 50168 lanval 50240 ranval 50241 lmdpropd 50278 cmdpropd 50279 concl 50282 coccl 50283 concom 50284 coccom 50285 islmd 50286 iscmd 50287 |
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