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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 5111 | . . . 4 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 ↔ 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) | |
| 3 | 2 | biimpi 219 | . . 3 ⊢ (𝐹(𝐷 Func 𝐸)𝐺 → 〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸)) |
| 4 | funcrcl 17916 | . . 3 ⊢ (〈𝐹, 𝐺〉 ∈ (𝐷 Func 𝐸) → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) | |
| 5 | 1, 3, 4 | 3syl 19 | . 2 ⊢ (𝜑 → (𝐷 ∈ Cat ∧ 𝐸 ∈ Cat)) |
| 6 | 5 | simprd 500 | 1 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 400 ∈ wcel 2149 〈cop 4597 class class class wbr 5110 (class class class)co 7408 Catccat 17716 Func cfunc 17907 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5258 ax-nul 5268 ax-pr 5402 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5111 df-opab 5175 df-xp 5665 df-dm 5669 df-iota 6490 df-fv 6542 df-ov 7411 df-oprab 7412 df-mpo 7413 df-func 17911 |
| This theorem is referenced by: imasubc2 49810 imasubc3 49814 upciclem2 49825 upciclem3 49826 upeu2 49830 uobrcl 49851 natoppfb 49889 fuco11 49984 fuco11cl 49985 fuco21 49994 fuco11b 49995 fuco11bALT 49996 fuco22natlem2 50001 fuco22natlem 50003 fucoid 50006 fucocolem1 50011 fucolid 50019 fucorid 50020 postcofval 50022 postcofcl 50023 precofval 50025 precofvalALT 50026 precofcl 50028 prcoftposcurfuco 50041 prcof1 50046 prcof2a 50047 prcof2 50048 prcofdiag1 50051 prcofdiag 50052 fucoppclem 50065 fucoppcid 50066 eufunclem 50179 diag1f1olem 50191 diag2f1olem 50194 lanval 50277 ranval 50278 lanup 50299 ranup 50300 lmdpropd 50315 cmdpropd 50316 concl 50319 coccl 50320 concom 50321 coccom 50322 islmd 50323 iscmd 50324 termolmd 50328 lmdran 50329 cmdlan 50330 |
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