| Mathbox for Zhi Wang |
< Previous
Next >
Nearby theorems |
||
| 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 5103 | . . . 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 18045 | . . 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 2144 〈cop 4834 class class class wbr 5102 (class class class)co 7422 Catccat 17845 Func cfunc 18036 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-xp 5656 df-dm 5660 df-iota 6496 df-fv 6549 df-ov 7425 df-oprab 7426 df-mpo 7427 df-func 18040 |
| This theorem is used by: imasubc2 50375 imasubc3 50379 upciclem2 50390 upciclem3 50391 upeu2 50395 uobrcl 50416 natoppfb 50460 fuco11 50555 fuco11cl 50556 fuco21 50565 fuco11b 50566 fuco11bALT 50567 fuco22natlem2 50572 fuco22natlem 50574 fucoid 50577 fucocolem1 50582 fucolid 50590 fucorid 50591 postcofval 50603 postcofcl 50604 precofval 50609 precofvalALT 50610 precofcl 50612 prcoftposcurfuco 50625 prcof1 50630 prcof2a 50631 prcof2 50632 prcofdiag1 50635 prcofdiag 50636 fucoppclem 50649 fucoppcid 50650 eufunclem 50763 diag1f1olem 50775 diag2f1olem 50781 lanval 50909 ranval 50910 lanup 50931 ranup 50932 lmdpropd 50947 cmdpropd 50948 concl 50951 coccl 50952 concom 50953 coccom 50954 islmd 50955 iscmd 50956 termolmd 50960 lmdran 50961 cmdlan 50962 |
| Copyright terms: Public domain | W3C validator |