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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 5104 | . . . 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 17952 | . . 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 501 | 1 ⊢ (𝜑 → 𝐸 ∈ Cat) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∈ wcel 2145 〈cop 4590 class class class wbr 5103 (class class class)co 7413 Catccat 17752 Func cfunc 17943 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-xp 5661 df-dm 5665 df-iota 6489 df-fv 6541 df-ov 7416 df-oprab 7417 df-mpo 7418 df-func 17947 |
| This theorem is used by: imasubc2 50078 imasubc3 50082 upciclem2 50093 upciclem3 50094 upeu2 50098 uobrcl 50119 natoppfb 50157 fuco11 50252 fuco11cl 50253 fuco21 50262 fuco11b 50263 fuco11bALT 50264 fuco22natlem2 50269 fuco22natlem 50271 fucoid 50274 fucocolem1 50279 fucolid 50287 fucorid 50288 postcofval 50290 postcofcl 50291 precofval 50293 precofvalALT 50294 precofcl 50296 prcoftposcurfuco 50309 prcof1 50314 prcof2a 50315 prcof2 50316 prcofdiag1 50319 prcofdiag 50320 fucoppclem 50333 fucoppcid 50334 eufunclem 50447 diag1f1olem 50459 diag2f1olem 50462 lanval 50545 ranval 50546 lanup 50567 ranup 50568 lmdpropd 50583 cmdpropd 50584 concl 50587 coccl 50588 concom 50589 coccom 50590 islmd 50591 iscmd 50592 termolmd 50596 lmdran 50597 cmdlan 50598 |
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