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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 5098 | . . . 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 17887 | . . 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 499 | 1 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 ∈ wcel 2141 〈cop 4585 class class class wbr 5097 (class class class)co 7391 Catccat 17687 Func cfunc 17878 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pr 5387 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-xp 5649 df-dm 5653 df-iota 6472 df-fv 6524 df-ov 7394 df-oprab 7395 df-mpo 7396 df-func 17882 |
| This theorem is referenced by: imasubc2 49734 imasubc3 49738 upciclem2 49749 upciclem3 49750 upeu2 49754 uobrcl 49775 natoppfb 49813 fuco11 49908 fuco11cl 49909 fuco21 49918 fuco11b 49919 fuco11bALT 49920 fuco22natlem2 49925 fuco22natlem 49927 fucoid 49930 fucocolem1 49935 fucolid 49943 fucorid 49944 postcofval 49946 postcofcl 49947 precofval 49949 precofvalALT 49950 precofcl 49952 prcoftposcurfuco 49965 prcof1 49970 prcof2a 49971 prcof2 49972 prcofdiag1 49975 prcofdiag 49976 fucoppclem 49989 fucoppcid 49990 eufunclem 50103 diag1f1olem 50115 diag2f1olem 50118 lanval 50201 ranval 50202 lanup 50223 ranup 50224 lmdpropd 50239 cmdpropd 50240 concl 50243 coccl 50244 concom 50245 coccom 50246 islmd 50247 iscmd 50248 termolmd 50252 lmdran 50253 cmdlan 50254 |
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